2024 in arthropod paleontology: Difference between revisions
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=== Eurypterids === |
=== Eurypterids === |
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==== Eurypterid research ==== |
==== Eurypterid research ==== |
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* Braddy (2024) studies the life mode of [[Carcinosomatoidea|carcinosomatoid]] eurypterids, interpreting them as slow-swimming ambush predators and mud grubbers, and interprets [[Megalograptidae|megalograptids]] as likely more [[Basal (phylogenetics)|basal]] than [[Carcinosomatidae|carcinosomatids]] and [[Mixopteridae|mixopterids]].<ref>{{Cite journal|last=Braddy |first=S. J. |title=Carcinosomatoid eurypterid palaeoecology and phylogeny: ichnology and palaeocommunities |year=2024 |journal=Neues Jahrbuch für Geologie und Paläontologie – Abhandlungen |doi=10.1127/njgpa/2024/1206 }}</ref> |
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* Bicknell, Gaines & Hopkins (2024) describe a |
* Bicknell, Gaines & Hopkins (2024) describe a carcinosomatid specimen from the [[Ordovician]] strata from the [[Beecher's Trilobite Bed]] ([[New York (state)|New York]], United States) preserving the first evidence for [[mesosoma]]l musculature in eurypterids, and providing evidence that eurypterid musculature can be preserved in [[pyrite]].<ref>{{Cite journal|last1=Bicknell |first1=R. D. C. |last2=Gaines |first2=R. R. |last3=Hopkins |first3=M. J. |title=Late Ordovician eurypterid preserves oldest euchelicerate musculature in pyrite |year=2024 |journal=Biology Letters |volume=20 |issue=7 |at=20240211 |doi=10.1098/rsbl.2024.0211 |pmid=38982848 |pmc=11252848 |pmc-embargo-date=July 10, 2025 }}</ref> |
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=== Xiphosurans === |
=== Xiphosurans === |
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* Lin ''et al.'' (2024) describe new fossil material of ''[[Retifacies]] abnormalis'' from the Cambrian Helinpu Formation (Yunnan, China) including large specimens with a [[carapace]] ornamentation different from what was previously known, and interpret the reported differences as developing during [[ontogeny]], but don't consider them to indicate [[Sexual dimorphism|sexual dimorphs]].<ref>{{cite journal |last1=Lin |first1=W. |last2=Pates |first2=S. |last3=Losso |first3=S. R. |last4=Fu |first4=D. |year=2024 |title=Intraspecific variation of early Cambrian (stage 3) arthropod ''Retifacies abnormalis'' revealed by morphometric analyses |journal=Frontiers in Ecology and Evolution |volume=12 |at=1336365 |doi=10.3389/fevo.2024.1336365 |doi-access=free }}</ref> |
* Lin ''et al.'' (2024) describe new fossil material of ''[[Retifacies]] abnormalis'' from the Cambrian Helinpu Formation (Yunnan, China) including large specimens with a [[carapace]] ornamentation different from what was previously known, and interpret the reported differences as developing during [[ontogeny]], but don't consider them to indicate [[Sexual dimorphism|sexual dimorphs]].<ref>{{cite journal |last1=Lin |first1=W. |last2=Pates |first2=S. |last3=Losso |first3=S. R. |last4=Fu |first4=D. |year=2024 |title=Intraspecific variation of early Cambrian (stage 3) arthropod ''Retifacies abnormalis'' revealed by morphometric analyses |journal=Frontiers in Ecology and Evolution |volume=12 |at=1336365 |doi=10.3389/fevo.2024.1336365 |doi-access=free }}</ref> |
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* Izquierdo-López & [[Jean-Bernard Caron|Caron]] (2024) describe new fossil material of ''[[Odaraia|Odaraia alata]]'' from the [[Burgess Shale]] (Canada), including well-preserved mandibles that can be [[Homology (biology)|homologized]] with those of Cambrian [[Fuxianhuiida|fuxianhuiids]] and extant [[Mandibulata|mandibulates]].<ref>{{cite journal |last1=Izquierdo-López |first1=A. |last2=Caron |first2=J.-B. |year=2024 |title=The Cambrian ''Odaraia alata'' and the colonization of nektonic suspension-feeding niches by early mandibulates |journal=Proceedings of the Royal Society B: Biological Sciences |volume=291 |issue=2027 |at=20240622 |doi=10.1098/rspb.2024.0622 |pmid=39043240 }}</ref> |
* Izquierdo-López & [[Jean-Bernard Caron|Caron]] (2024) describe new fossil material of ''[[Odaraia|Odaraia alata]]'' from the [[Burgess Shale]] (Canada), including well-preserved mandibles that can be [[Homology (biology)|homologized]] with those of Cambrian [[Fuxianhuiida|fuxianhuiids]] and extant [[Mandibulata|mandibulates]].<ref>{{cite journal |last1=Izquierdo-López |first1=A. |last2=Caron |first2=J.-B. |year=2024 |title=The Cambrian ''Odaraia alata'' and the colonization of nektonic suspension-feeding niches by early mandibulates |journal=Proceedings of the Royal Society B: Biological Sciences |volume=291 |issue=2027 |at=20240622 |doi=10.1098/rspb.2024.0622 |pmid=39043240 }}</ref> |
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* Braddy (2024) reviews diversity, ichnology, ecology and evolution of [[Euthycarcinoidea|euthycarcinoids]], and names a new family [[Apankuridae]].<ref>{{Cite journal|last=Braddy |first=S. J. |title=Euthycarcinoid ecology and evolution |year=2024 |journal=Neues Jahrbuch für Geologie und Paläontologie – Abhandlungen |doi=10.1127/njgpa/2024/1199 }}</ref> |
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* Review of the fossil record of [[millipede]]s is published by Álvarez-Rodríguez ''et al.'' (2024).<ref>{{Cite journal|last1=Álvarez-Rodríguez |first1=M. |last2=Riquelme |first2=F. |last3=Hernández-Patricio |first3=M. |last4=Cupul-Magaña |first4=F. |year=2024 |title=Diplopoda in the world fossil record |journal=Zoological Systematics |volume=49 |issue=3 |pages=185–245 |doi=10.11865/zs.2024201 }}</ref> |
* Review of the fossil record of [[millipede]]s is published by Álvarez-Rodríguez ''et al.'' (2024).<ref>{{Cite journal|last1=Álvarez-Rodríguez |first1=M. |last2=Riquelme |first2=F. |last3=Hernández-Patricio |first3=M. |last4=Cupul-Magaña |first4=F. |year=2024 |title=Diplopoda in the world fossil record |journal=Zoological Systematics |volume=49 |issue=3 |pages=185–245 |doi=10.11865/zs.2024201 }}</ref> |
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Revision as of 13:25, 24 July 2024
2024 in arthropod paleontology is a list of new arthropod fossil taxa, including arachnids, crustaceans, trilobites, and other arthropods (except insects, which have their own list) that were announced or described, as well as other significant arthropod paleontological discoveries and events which occurred in 2024.
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Chelicerates
Arachnids
Araneae
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Sp. nov |
Guo, Selden & Ren in Guo et al. |
A spider belonging to the family Lagonomegopidae. |
||||||
Sp. nov |
Guo et al. |
Late Cretaceous (Cenomanian) |
Burmese amber |
A spider belonging to the family Lagonomegopidae. |
||||
Sp. nov |
Valid |
Hou et al. |
Cretaceous |
Burmese amber |
A spider belonging to the family Pholcochyroceridae. |
|||
Sp.nov |
Poinar |
Quaternary |
An ant-mimick spider. Originally described as a species of Myrmarachne; Perger (2024) transferred it to the genus Myrmecium.[4] |
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Sp. nov |
Valid |
Hou et al. |
Cretaceous |
Burmese amber |
A spider belonging to the family Pholcochyroceridae. |
Araneological research
- Córdova-Tabares et al. (2024) describe a sac spider specimen from the Mexican amber preserved with an ant belonging to the genus Azteca, providing evidence of a fossil spider showing trapping and feeding behavior seen also in its extant relatives.[5]
Ixodida
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Sp. nov |
Valid |
Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al. |
Cretaceous |
Burmese amber |
A tick belonging to the family Nuttalliellidae. |
|||
Deinocroton lacrimus[6] |
Sp. nov |
Valid |
Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al. |
Cretaceous |
Burmese amber |
A tick belonging to the family Nuttalliellidae. |
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Gen. et sp. nov |
Valid |
Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al. |
Cretaceous |
Burmese amber |
A tick belonging to the family Nuttalliellidae. The type species is L. robustus. |
|||
Sp. nov |
Valid |
Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al. |
Cretaceous |
Burmese amber |
A species of Nuttalliella. |
|||
Sp. nov |
Valid |
Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al. |
Cretaceous |
Burmese amber |
A species of Nuttalliella. |
|||
Sp. nov |
Valid |
Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al. |
Cretaceous |
Burmese amber |
A species of Nuttalliella. |
|||
Sp. nov |
Valid |
Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al. |
Cretaceous |
Burmese amber |
A species of Nuttalliella. |
|||
Sp. nov |
Valid |
Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al. |
Cretaceous |
Burmese amber |
A species of Nuttalliella. |
Opiliones
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Sp. nov |
Valid |
Bartel, Dunlop & Wedmann |
Eocene |
Possibly a species of Leiobunum. |
||||
Sp. nov |
Valid |
Bartel, Dunlop & Wedmann |
Eocene |
Messel pit |
Possibly a species of Leiobunum. |
Opiliones research
- Gainett et al. (2024) report that extant daddy longlegs have six eyes, including four vestigial ones, and reevaluate the affinities of fossil members of Opiliones with four eyes, resulting in older estimated ages of harvestman diversification.[8]
Pseudoscorpiones
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Gen. et sp. nov |
Valid |
Agnihotri et al. |
Eocene |
Cambay Basin |
A member of the family Geogarypidae. The type species is G. valiyaensis. |
|||
Sp. nov |
Valid |
Röschmann et al. |
Late Cretaceous (Cenomanian) |
Burmese amber |
A member of the family Hyidae. |
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Sp. nov |
Córdova-Tabares et al. |
Miocene |
A member of the family Cheliferidae. |
Schizomida
Schizomid research
- A study on changes of body size and shape diversity of male flagella in Schizomida throughout their evolutionary history is published by Belojević et al. (2024).[12]
Scorpiones
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Sp. nov |
Valid |
Lourenço in Lourenço & Velten |
Cretaceous |
Burmese amber |
A member of Buthoidea belonging to the family Palaeoburmesebuthidae |
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Sp. nov |
Valid |
Lourenço |
Cretaceous |
Burmese amber |
A member of the family Palaeoeuscorpiidae. |
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Sp. nov |
Valid |
Lourenço in Lourenço & Velten |
Cretaceous |
Burmese amber |
A member of the family Chaerilobuthidae. |
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Gen. et sp. nov |
Valid |
Lourenço in Lourenço & Velten |
Cretaceous |
Burmese amber |
A member of Buthoidea belonging to the family Palaeoburmesebuthidae. The type species is P. schmidti. |
Solifugae
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Sp. nov |
Valid |
Santana et al. |
Early Cretaceous (Aptian—Albian) |
A whip scorpion belonging to the family Thelyphonidae. |
Trombidiformes
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Gen. et sp. nov |
Valid |
Khaustov, Vorontsov & Lindquist |
Cretaceous |
Burmese amber |
A mite belonging to the family Trochometridiidae. The type species is R. pankowskiorum. |
Trombidiform research
- Larvae of mites belonging to the group Erythraeoidea parasitising gall midges (providing evidence of an association unknown in extant fauna) are reported from the Cretaceous amber from Myanmar by Arce et al. (2024), who interpret this finding as indicative of shift of the host range of the studied mites after the Cretaceous.[19]
Other arachnids
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Gen. et sp. nov |
Valid |
Selden & Dunlop |
Carboniferous (Pennsylvanian) |
A member of Pantetrapulmonata of uncertain affinities. The type species is D. acanthopoda. |
Eurypterids
Eurypterid research
- Braddy (2024) studies the life mode of carcinosomatoid eurypterids, interpreting them as slow-swimming ambush predators and mud grubbers, and interprets megalograptids as likely more basal than carcinosomatids and mixopterids.[21]
- Bicknell, Gaines & Hopkins (2024) describe a carcinosomatid specimen from the Ordovician strata from the Beecher's Trilobite Bed (New York, United States) preserving the first evidence for mesosomal musculature in eurypterids, and providing evidence that eurypterid musculature can be preserved in pyrite.[22]
Xiphosurans
Xiphosuran research
- A specimen of Tachypleus syriacus preserved with intestinal contents transitioning into a coprolite is described from the Cenomanian Hjoula Lagerstätte (Lebanon) by Bicknell et al. (2024).[23]
Other chelicerates
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Gen. et sp. nov |
Valid |
Bicknell et al. |
Carboniferous (Serpukhovian) |
A member of Euchelicerata of uncertain affinities. The type species is T. edgecombei. |
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Setapedites[25] | Gen. et sp. nov | Valid |
Lustri et al. |
Lower Ordovician | Fezouata Formation | Morocco | A member of Euchelicerata recovered as an offacolid synziphosurine. The type species is S. abundantis. |
Crustaceans
Malacostracans
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Gen. et sp. nov |
Vega, Garassino, Nyborg & Pasini in Vega et al. |
Late Cretaceous |
A raninoid crab. The type species is A. hexagranula. |
|||||
Sp. nov |
Valid |
Nyborg et al. |
Late Cretaceous (Campanian) |
A raninoid crab. |
||||
Sp. nov |
Valid |
Garassino & Pasini in Girone et al. |
Pleistocene |
A crab belonging to the family Goneplacidae. |
||||
Sp. nov |
Valid |
Ossó et al. |
Late Cretaceous (Cenomanian) |
Picofrentes Formation |
A crab belonging to the family Dromiidae and the subfamily Goniodromitinae. |
|||
Gen. et 2 sp. nov |
Valid |
Copilaş-Ciocianu & Ionesi |
Miocene |
An amphipod belonging to the family Gammaridae. The type species is E. moldavica; genus also includes E. prisca. |
||||
Sp. nov |
Valid |
Gašparič et al. |
Oligocene (Chattian) |
Trbovlje Formation |
A crab belonging to the family Hymenosomatidae. |
|||
Sp. nov |
Valid |
Nyborg & Garassino |
Late Cretaceous (Campanian) |
Tuna Canyon Formation |
A crab belonging to the family Lithophylacidae. |
|||
Sp. nov |
Garassino, Pasini, Mirzaie Ataabadi & Nyborg in Garassino et al. |
Miocene (Tortonian) |
A crab belonging to the family Leucosiidae and the subfamily Ebaliinae. |
|||||
Sp. nov |
Valid |
Gašparič et al. |
Oligocene (Chattian) |
Trbovlje Formation |
A crab belonging to the family Hymenosomatidae. |
|||
Sp. nov |
Valid |
Garassino & Pasini in Girone et al. |
Pleistocene |
A crab belonging to the family Goneplacidae. |
||||
Gen. et sp. nov |
Valid |
Winkler et al. |
Late Jurassic |
A shrimp belonging to the superfamily Bresilioidea. The type species is P. kurthetriegeri. |
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Gen. et comb. nov |
Valid |
Charbonnier et al. |
Miocene (Messinian) |
A crab belonging to the superfamily Majoidea and the family Oregoniidae. The type species is "Hyas" oranensis Van Straelen (1937). |
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Gen. et sp. nov |
Garassino, Pasini, Mirzaie Ataabadi & Nyborg in Garassino et al. |
Miocene (Tortonian) |
A crab belonging to the family Portunidae. The type species is P. arcuatus. |
|||||
Sp. nov |
Valid |
Pasini & Garassino |
Miocene |
A species of Portunus. |
||||
Sp. nov |
Valid |
Van Bakel & Ossó |
Miocene (Tongaporutuan) |
Urenui Formation |
A relative of the Tasmanian giant crab. |
|||
Sp. nov |
Vega, Garassino, Nyborg & Pasini in Vega et al. |
Late Cretaceous |
A raninoid crab. |
|||||
Gen. et sp. nov |
Vega, Garassino, Nyborg & Pasini in Vega et al. |
Late Cretaceous |
A raninoid crab. The type species is R. monosensis. |
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Comb. nov |
(Peach) |
Carboniferous (Tournaisian) |
A member of the family Tealliocarididae. Moved from Tealliocaris robusta Peach (1908). |
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Sp. nov |
Valid |
Mychko, Schweitzer & Feldmann |
Late Cretaceous (Campanian) |
A crab belonging to the family Orithopsidae. |
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Sp. nov |
Clark & Ross |
Carboniferous (Tournaisian) |
Ballagan Formation |
A member of the family Tealliocarididae. |
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Sp. nov |
Clark & Ross |
Carboniferous (Mississippian) |
A member of the family Tealliocarididae. |
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Gen. et comb. nov |
Valid |
Charbonnier et al. |
Miocene (Messinian) |
A crab belonging to the superfamily Majoidea and the family Epialtidae. The type species is "Maia" arambourgi Van Straelen (1937). |
Malacostracan research
- A study on the hydrodynamic performance of carapaces of caryocaridid archaeostracans, providing evidence that the carapace shapes facilitated the pelagic mode of life of caryocaridids, is published by Pates & Xue (2024).[40]
- Redescription of Kellnerius jamacaruensis is published by Barros, Oliveira & Saraiva (2024), who reaffirm the inclusion of this shrimp within the family Palaemonidae.[41]
- Redescription of "Dromiopsis" oscari is published by LaBonte, Schweitzer & Feldmann (2024) who transfer this crab from the family Dynomenidae to the family Goniodromitidae and to the genus Sabellidromites.[42]
Ostracods
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Sp. nov |
Ceolin et al. |
Cretaceous–Palaeogene transition |
||||||
Gen. et comb. et 3 sp. nov |
Valid |
Tesakova |
Middle Jurassic (Bathonian and Callovian) |
A member of Podocopida belonging to the family Progonocytheridae. The type species is "Palaeocytheridea" milanovskyi Lyubimova (1955); genus also includes new species B. prima, B. paenultima and B. ultima. |
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Nom. nov |
Valid |
Guillam |
Early Cretaceous |
Orós Formation |
A member of Cypridoidea; a replacement name for Hastacypris Filho, Fauth & Sames. |
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Sp. nov |
Ferreira & Ramos |
Neogene |
Solimões Formation |
|||||
Sp. nov |
Ferreira & Ramos |
Neogene |
Solimões Formation |
|||||
Sp. nov |
Valid |
Cabral, Lord & Pinto in Cabral et al. |
Early Jurassic (Toarcian) |
Póvoa da Lomba Formation |
A member of the family Cytheruridae. |
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Gen. et sp. nov |
Siveter et al. |
Silurian |
A member of Beyrichicopida belonging to the group Binodicopina and the family Bolliidae. The type species is D. paparme. |
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Sp. nov |
Valid |
Cabral, Lord & Pinto in Cabral et al. |
Early Jurassic (Toarcian) |
Póvoa da Lomba Formation |
A member of the family Cytheruridae. |
|||
Sp. nov |
Ceolin et al. |
Cretaceous–Palaeogene transition |
||||||
Sp. nov |
Ceolin et al. |
Cretaceous–Palaeogene transition |
||||||
Sp. nov |
McDonald, Weldon & Warne |
Pliocene (Zanclean) |
Jemmys Point Formation |
A member of the family Bairdiidae. |
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Sp. nov |
McDonald, Weldon & Warne |
Pliocene (Zanclean) |
Jemmys Point Formation |
A member of the family Cytheruridae. |
||||
Gen. et 3 sp. nov |
Valid |
Cabral & Lord in Cabral et al. |
Jurassic (Toarcian and Aalenian) |
São Gião Formation |
A member of the family Protocytheridae. The type species is O. herrrigi; genus also includes O. mataensis and possibly also O.? sicoensis. |
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Sp. nov |
Valid |
Cabral & Lord in Cabral et al. |
Early Jurassic (Toarcian) |
Póvoa da Lomba Formation |
A member of the family Cytheruridae. |
|||
Gen. et comb. nov |
Valid |
Tesakova |
Middle Jurassic (Bathonian) |
A member of Podocopida belonging to the family Progonocytheridae. The type species is "Acanthocythere" elongata Wakefield (1994). |
||||
Sp. nov |
Ceolin et al. |
Cretaceous–Palaeogene transition |
||||||
Sp. nov |
McDonald, Weldon & Warne |
Pliocene (Zanclean) |
Jemmys Point Formation |
A member of the family Trachyleberididae. |
||||
Sp. nov |
Forel et al. |
Late Jurassic (Oxfordian) |
||||||
Nom. nov |
Valid |
Guillam |
Devonian (Frasnian) |
A replacement name for Ornatella Rozhdestvenskaya in Chibrikova & Rozhdestvenskaya (1959). |
||||
Nom. nov |
Li |
Silurian |
A member of the family Bythocytheridae; a replacement name for Scaphium Jordan (1964). Published online in 2024, but the issue date is listed as December 2023. |
|||||
Sp. nov |
McDonald, Weldon & Warne |
Pliocene (Zanclean) |
Jemmys Point Formation |
A member of the family Candonidae. |
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Sp. nov |
Song in Song et al. |
Devonian (Givetian) |
Dushan Formation |
A member of Podocopida belonging to the superfamily Bairdiocypridoidea and the family Bairdiocyprididae. |
Ostracod research
- A study on pores and associated canals in extant and Triassic ornate bairdiids, providing new morphological data interpret as supporting the interpretation of the Triassic genera Mirabairdia and Nodobairdia as distinct from the extant genus Triebelina, is published by Forel et al. (2024).[53]
- Taxonomic revision of ostracods from the Lower Cretaceous Codó Formation (Brazil) is published by Coimbra & Petró (2024).[54]
- A study on changes of the diversity of ostracods from the Indo-Australian Archipelago region throughout the Cenozoic, aiming to determine factors responsible for recorded changes, is published by Tian et al. (2024), who argue that the studied region became the richest marine biodiversity hotspot mostly as a result of immunity to major extinction events during the Cenozoic, shift towards colder climate and the increase in habitat size (shelf area).[55]
Other crustaceans
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Sp. nov |
Valid |
Poschmann et al. |
Devonian |
Klerf Formation |
A clam shrimp. |
|||
Gen. et sp. nov |
Valid |
Poschmann et al. |
Devonian |
Klerf Formation |
A clam shrimp. The type species is E. wenndorfi. |
|||
Nom. nov |
Valid |
Ceccolini & Cianferoni |
Late Jurassic |
A member of the family Eosestheriidae; a replacement name for Pingquania Wang in Wang & Li (2008). Published online in 2024, but the issue date is listed as December 2023. |
||||
Sp. nov |
Valid |
Poschmann et al. |
Devonian |
A clam shrimp. |
||||
Sp. nov |
Valid |
Xue & Li |
Middle–Late Jurassic |
Yaojie Formation |
A clam shrimp. |
|||
Comb. nov |
(Chen) |
Late Triassic (Rhaetian) |
A clam shrimp. Originally described as Euestheria? luchangensis Chen (1974). |
|||||
Sp. nov |
Valid |
Liao & Huang in Liao et al. |
Middle Jurassic (Callovian) |
Longmen Formation |
A clam shrimp belonging to the superfamily Eosestherioidea and the family Triglyptidae. |
Other crustacean research
- Alarcón et al. (2024) report the discovery of new clam shrimp assemblages from the Upper Triassic (Norian) Bocas and Montebel formations (Colombia), providing evidence of a similar composition of Norian clamp shrimp assemblages from northwestern Gondwana and rift basins of central Pangea (but different from those from southern Gondwana).[61]
Insects
Radiodonts
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Gen. et sp. nov |
Valid |
Wu et al. |
A radiodont of uncertain phylogenetic placement. The type species is S. ankylosskelos. |
Trilobites
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Sp. nov |
Valid |
Sepúlveda et al. |
Soleras Formation |
A member of Redlichiida belonging to the group Olenellina. |
||||
Sp. nov |
Valid |
Taylor, Loch & Repetski |
Cambrian (Furongian) |
A member of the family Olenidae. |
||||
Sp. nov |
Valid |
Sundberg, Cothren & Dehler |
Cambrian |
Nounan Formation |
A member of the family Aphelaspididae. |
|||
Gen. et comb. nov |
Valid |
Van Viersen |
Silurian |
Motol Formation |
A member of the family Odontopleuridae. The type species is "Acidaspis" roemeri Barrande (1852); genus also includes "Odontopleura" dormitzeri Hawle & Corda (1847) and "Odontopleura" dumortieri Hawle & Corda (1847). |
|||
Sp. nov |
Valid |
Johnson |
Devonian |
Achguig Group |
A member of Harpetida belonging to the family Harpetidae. |
|||
Sp. nov |
Valid |
Johnson |
Devonian |
Er Remlia Formation |
A member of Harpetida belonging to the family Harpetidae. |
|||
Sp. nov |
Valid |
Fortey, Vargas-Parra & Droser |
Ordovician |
A member of the family Raphiophoridae. |
||||
Sp. nov |
Valid |
Johnson |
Devonian |
El Otfal Formation |
A member of Harpetida belonging to the family Harpetidae. |
|||
Harpes lahceni[67] |
Sp. nov |
Valid |
Johnson |
Devonian |
El Otfal Formation |
A member of Harpetida belonging to the family Harpetidae. |
||
Harpes lentigo[67] |
Sp. nov |
Valid |
Johnson |
Devonian |
Tazoulait Formation |
A member of Harpetida belonging to the family Harpetidae. |
||
Harpes oudris[67] |
Sp. nov |
Valid |
Johnson |
Devonian |
El Otfal Formation |
A member of Harpetida belonging to the family Harpetidae. |
||
Harpes prescheri[67] |
Sp. nov |
Valid |
Johnson |
Devonian |
Er Remlia Formation |
A member of Harpetida belonging to the family Harpetidae. |
||
Harpes sphenocephalus[67] |
Sp. nov |
Valid |
Johnson |
Devonian |
Er Remlia Formation |
A member of Harpetida belonging to the family Harpetidae. |
||
Harpes supercilium[67] |
Sp. nov |
Valid |
Johnson |
Devonian |
El Otfal Formation |
A member of Harpetida belonging to the family Harpetidae. |
||
Sp. nov |
Valid |
Johnson |
Devonian |
A member of Harpetida belonging to the family Harpetidae. |
||||
Sp. nov |
Valid |
Van Viersen |
Devonian |
A member of the family Odontopleuridae. |
||||
Sp. nov |
Valid |
Johnson |
Devonian |
Ihandar Formation |
A member of Harpetida belonging to the family Harpetidae. |
|||
Sp. nov |
Valid |
Sundberg, Cothren & Dehler |
Cambrian |
Nounan Formation |
A member of the family Kingstoniidae. |
|||
Sp. nov |
Tang et al. |
Carboniferous |
||||||
Sp. nov |
Valid |
Johnson |
Devonian |
Tazoulait Formation |
A member of Harpetida belonging to the family Harpetidae. |
|||
Lioharpes galea[67] |
Sp. nov |
Valid |
Johnson |
Devonian |
Ihandar Formation |
A member of Harpetida belonging to the family Harpetidae. |
||
Lioharpes morocconensis[67] |
Sp. nov |
Valid |
Johnson |
Devonian |
Boutiskaouine Formation |
A member of Harpetida belonging to the family Harpetidae. |
||
Lioharpes saredra[67] |
Sp. nov |
Valid |
Johnson |
Devonian |
Probably Boutiskaouine Formation |
A member of Harpetida belonging to the family Harpetidae. |
||
Lioharpes scopulum[67] |
Sp. nov |
Valid |
Johnson |
Devonian |
Probably Ihandar Formation |
A member of Harpetida belonging to the family Harpetidae. |
||
Gen. et 9 sp. et comb. nov |
Valid |
Johnson |
Devonian (Pragian to Emsian) |
Ihandar Formation |
A member of Harpetida belonging to the family Harpetidae. The types species is M. hammii; genus also includes new species M. azmamarensis, M. forteyi, M. ihmadii, M. laatchanensis, M. minutipunctus, M. oufatenensis, M. terridus and M. zguidensis, as well as "Harpes" rouvillei Frech (1887) and "Harpes" sculptus Hawle & Corda (1847). |
|||
Sp. nov |
Valid |
Webster in Webster & Caron |
Eager Formation |
A member of the family Olenellidae. |
||||
Gen. et 8 sp. et comb. nov |
Valid |
Johnson |
Devonian (Emsian to Eifelian) |
El Otfal Formation |
A member of Harpetida belonging to the family Harpetidae. The types species is P. segaouii; genus also includes new species P. apteros, P. chaperon, P. hannabouensis, P. haustrum, P. igaouii, P. merzaneensis and P. torquis, as well as "Harpes" hamarlaghdadensis Crônier et al. (2018) and probably also "Harpes" fornicatus Novák (1890) and "Harpes" pygmaeus Lütke (1965). |
|||
Sp. nov |
Valid |
Fortey, Vargas-Parra & Droser |
Ordovician |
Al Rose Formation |
A member of the family Nileidae. |
|||
Sp. nov |
Valid |
Leidi et al. |
Ordovician (Katian) |
A member of the family Encrinuridae. |
||||
Gen. et 4 sp. et comb. nov |
Valid |
Johnson |
Devonian (Lochkovian to Eifelian) |
A member of Harpetida belonging to the family Harpetidae. The types species is S. rissaniensis; genus also includes new species S. calceolus, S. capricornus and S. retiarius, as well as "Kielania" obuti Pribyl & Vanek (1986) and "Harpes" convexus Hawle & Corda (1847). |
||||
Sp. nov |
Valid |
Sepúlveda et al. |
Cambrian Stage 4 |
Soleras Formation |
A member of Redlichiida belonging to the group Ellipsocephaloidea and the family Ellipsocephalidae. |
|||
Sp. nov |
Valid |
Pereira, Rábano & Gutiérrez-Marco |
Ordovician (Katian) |
|||||
Sp. nov |
Valid |
Webster in Webster & Caron |
Cambrian Stage 4 |
Eager Formation |
A member of Olenelloidea belonging to the family Wanneriidae. |
Trilobite research
- Drage (2024) finds evidence of only minor differences in morphometry between trilobites displaying different modes of moulting.[73]
- Trilobite fossil material from the Tiout section in Morocco, representing the first occurrence of trilobites in West Gondwana and some of the oldest trilobite fossils in general, is determined to be approximately 519.62-million-years-old by Sinnesael, Millard & Smith (2024).[74]
- El Albani et al. (2024) report the discovery of exceptionally preserved trilobite specimens from the Cambrian Tatelt Formation (Morocco) fossilized through rapid ash burial caused by underwater pyroclastic flow, providing new information on the trilobite anatomy.[75]
- Evidence interpreted as indicative of a direct link between the spread of low-oxygen conditions in shallow-water settings and the turnover of trilobites from the North China Platform during the Steptoean positive carbon isotope excursion is presented by Yang et al. (2024).[76]
- Hopkins, Gutiérrez-Marco & Di Silvestro (2024) describe fossil material of Leptoplastides salteri from the Fezouata Formation (Morocco), extending known range of this species from Avalonia into Gondwana.[77]
- Losso & Ortega-Hernández (2024) describe the appendages of Ceraurus pleurexanthemus and Flexicalymene senaria from the Walcott–Rust quarry (New York, United States) and report close morphological similarity of the exopodite structure in C. pleurexanthemus and Anacheirurus adserai in spite of the two species living in different environments and being separated by 20 million years.[78]
- Specimens of Dalmanitina socialis preserved with remains of the alimentary tract are described from the Ordovician Letná Formation (Czech Republic) by Fatka, Budil & Mikuláš (2024).[79]
- Bicknell et al. (2024) describe a specimen of Toxochasmops vormsiensis from the Katian Kõrgessaare Formation (Estonia) preserved molted within the body chamber of a nautiloid cephalopod Gorbyoceras textumaraneum, representing the first known record of cryptic molting of pterygometopid trilobites.[80]
- A study on the biogeography of Cheirurina during the Ordovician is published by Pérez-Peris, Adrain & Daley (2024).[81]
Other arthropods
Name | Novelty | Status | Authors | Age | Type locality | Country | Notes | Images |
---|---|---|---|---|---|---|---|---|
Sp. nov |
Valid |
Taylor, Loch & Repetski |
Cambrian (Furongian) |
Windfall Formation |
A member of Agnostida belonging to the family Agnostidae. |
|||
Lotagnostus morrisoni[64] |
Sp. nov |
Valid |
Taylor, Loch & Repetski |
Cambrian (Furongian) |
Windfall Formation |
A member of Agnostida belonging to the family Agnostidae. |
||
Lotagnostus nolani[64] |
Sp. nov |
Valid |
Taylor, Loch & Repetski |
Cambrian (Furongian) |
Windfall Formation |
A member of Agnostida belonging to the family Agnostidae. |
||
Lotagnostus rushtoni[64] |
Sp. nov |
Valid |
Taylor, Loch & Repetski |
Cambrian (Furongian) |
Windfall Formation |
A member of Agnostida belonging to the family Agnostidae. |
||
Sp. nov |
Valid |
Taylor, Loch & Repetski |
Cambrian (Furongian) |
Windfall Formation |
A member of Agnostida belonging to the family Diplagnostidae. |
|||
Sp. nov |
Valid |
Ehiro & Kano |
Early Triassic (Olenekian) |
Osawa Formation |
A thylacocephalan belonging to the family Microcarididae. |
|||
Sp. nov |
Valid |
Jin et al. |
Hongjingshao Formation |
|||||
Sp. nov |
Valid |
Su, Cai & Huang |
Cretaceous (Albian to Cenomanian) |
Burmese amber |
A millipede belonging to the family Siphonorhinidae. |
|||
Sp. nov |
Valid |
Su, Cai & Huang |
Cretaceous (Albian to Cenomanian) |
Burmese amber |
A millipede belonging to the family Siphonorhinidae. |
- O'Flynn et al. (2024) describe new fossil material of Bushizheia yangi from the Cambrian Chengjiang Lagerstätte (China), providing new information on its head morphology, and interpret the studied specimens as supporting the interpretation of a six-segmented head as an ancestral state for Deuteropoda.[85]
- Redescription and a study on the affinities of Urokodia aequalis is published by Liu et al. (2024), who interpret this arthropod as a basal member of Artiopoda, and interpret its body plan as likely similar to the ancestral body plan for Artiopoda.[86]
- Lin et al. (2024) describe new fossil material of Retifacies abnormalis from the Cambrian Helinpu Formation (Yunnan, China) including large specimens with a carapace ornamentation different from what was previously known, and interpret the reported differences as developing during ontogeny, but don't consider them to indicate sexual dimorphs.[87]
- Izquierdo-López & Caron (2024) describe new fossil material of Odaraia alata from the Burgess Shale (Canada), including well-preserved mandibles that can be homologized with those of Cambrian fuxianhuiids and extant mandibulates.[88]
- Braddy (2024) reviews diversity, ichnology, ecology and evolution of euthycarcinoids, and names a new family Apankuridae.[89]
- Review of the fossil record of millipedes is published by Álvarez-Rodríguez et al. (2024).[90]
General research
- Loewen et al. (2024) describe a diverse amber deposit from the Maastrichtian strata from the Big Muddy Badlands (Canada), preserving fossils of representatives of seven arthropod orders and at least 11 insect families, and interpret the studied assemblage as providing evidence of a faunal turnover among insects prior to the Cretaceous–Paleogene extinction event.[91]
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