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==Fossil content==
==Fossil content==
===Vertebrates===
===Vertebrates===
====Acanthodians====
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====Actinopterygians====
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====Jawless fish====
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| ''[[Euphanerops]]''
| ''[[Euphanerops]]''
|''E. longaevus''
|''E. longaevus''
| [[Miguasha]].<ref name=":0" /><ref name=":3">{{Cite web |last=Chevrinais |first=Dr Marion |last2=MOREL |first2=Miss CATHERINE |last3=Renaud |first3=Dr Claude B. |last4=CLOUTIER |first4=Dr RICHARD |date=9 December 2022 |title=Ontogeny of Euphanerops longaevus from the Upper Devonian Miguasha Fossil-Fish-Lagerstätte and comparison with the skeletogenesis of the Sea Lamprey Petromyzon marinus |url=https://cdnsciencepub.com/doi/abs/10.1139/cjes-2022-0062 |access-date=2022-12-14 |website=https://doi.org/10.1139/cjes-2022-0062 |language=en |doi=10.1139/cjes-2022-0062}}</ref>
| <ref name=":0" />
|Over 3,500 specimens.<ref name=":3" />
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| A [[Euphaneropidae|euphaneropid]].
| A [[Euphaneropidae|euphaneropid]].
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====Placoderms====
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====Sarcopterygians====
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===Invertebrates===
===Invertebrates===
====Arthropods====
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====Ctenophores====
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Revision as of 23:01, 14 December 2022

For homonymy, see Escuminac.
Escuminac Formation
Stratigraphic range: Devonian (Middle Frasnian) 385–374 Ma
TypeGeological formation
Unit ofMiguasha Group[1]
UnderliesBonaventure Formation[1]
OverliesFleurant Formation[1]
Location
Region Quebec
Country Canada

The Escuminac Formation is a geologic formation in Quebec. It preserves fossils dating back to the Devonian period.

Description

Miguasha National Park is located within this formation along the estuary of the Restigouche River on the south coast of the Gaspé Peninsula. The fossil biota from the Park is thus referred to as the Miguasha biota.[1] The main Miguasha exposures were named the 'René Bureau Cliffs' after the geologist and paleontologist.[1]

The formation's depositional environment has been variously considered as lacustrine, estuarine, coastal marine or marine, though evidence from the fossil assemblage, stratigraphic and sedimentological setting, and geochemistry of the sedimentary rocks and bones suggests an estuarine interpretation is most fitting.[1]

Fossil content

Vertebrates

Acanthodians

Acanthodians
Genus Species Presence Material Notes Images
Diplacanthus D. ellsi [1] A diplacanthiform.
D. horridus [1] A diplacanthiform.
Homalacanthus H. concinnus [1]
Triazeugacanthus T. affinis Miguasha, Quebec.[1][2] Thousands of specimens representing multiple ontogenetic stages.[2]

Actinopterygians

Actinopterygians
Genus Species Presence Material Notes Images
Cheirolepis C. canadensis [1]

Jawless fish

Jawless fish
Genus Species Presence Material Notes Images
Endeiolepis E. aneri [1]
Escuminaspis E. laticeps [1]
Euphanerops E. longaevus Miguasha.[1][3] Over 3,500 specimens.[3] A euphaneropid.
Levesquaspis L. patteni [1]

Placoderms

Placoderms
Genus Species Presence Material Notes Images
Bothriolepis B. canadensis [1] An antiarch.
Plourdosteus P. canadensis [1] An arthrodire.

Sarcopterygians

Sarcopterygians
Genus Species Presence Material Notes Images
Callistiopterus C. clappi [1]
Elpistostege E. watsoni [1] A stegocephalian.
Eusthenopteron E. foordi [1] A tristichopterid.
Fleurantia F. denticulata [1] A lungfish.
Holoptychiidae Holoptychiidae nov. sp. [1] A porolepiform.
Holoptychius H. jarviki [1] A porolepiform.
Miguashaia M. bureaui Miguasha, Quebec.[1][4] A coelacanth.
Quebecius Q. quebecensis [1] A porolepiform.
Scaumenacia S. curta [1] A lungfish.

Invertebrates

Arthropods

Arthropods
Genus Species Presence Material Notes Images
Asmusia A. membranacea [1] A clam shrimp.
Petaloscorpio P. bureaui [1] A scorpion.
Zanclodesmus Z. willetti [1][5] A millipede.

Ctenophores

Ctenophores
Genus Species Presence Material Notes Images
Daihuoides D. jakobvintheri Miguasha, Quebec.[6] MHNM 24-01.[6]

Plants

Plants
Genus Species Presence Material Notes Images
Archaeopteris A. halliana [1]
Barynophyton [1]
Flabellofolium [1]
Protobarynophyton [1]
Spermasporites [1]

See also

References

  1. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah Cloutier, Richard (2013-08-24). "Great Canadian Lagerstätten 4. The Devonian Miguasha Biota (Québec): UNESCO World Heritage Site and a Time Capsule in the Early History of Vertebrates". Geoscience Canada. 40 (2): 149. doi:10.12789/geocanj.2013.40.008. ISSN 1911-4850.
  2. ^ a b Chevrinais, Marion; Cloutier, Richard; Sire, Jean-Yves (February 2015). "The revival of a so-called rotten fish: the ontogeny of the Devonian acanthodian Triazeugacanthus". Biology Letters. 11 (2): 20140950. doi:10.1098/rsbl.2014.0950. ISSN 1744-9561. PMC 4360106. PMID 25694507.
  3. ^ a b Chevrinais, Dr Marion; MOREL, Miss CATHERINE; Renaud, Dr Claude B.; CLOUTIER, Dr RICHARD (9 December 2022). "Ontogeny of Euphanerops longaevus from the Upper Devonian Miguasha Fossil-Fish-Lagerstätte and comparison with the skeletogenesis of the Sea Lamprey Petromyzon marinus". https://doi.org/10.1139/cjes-2022-0062. doi:10.1139/cjes-2022-0062. Retrieved 2022-12-14. {{cite web}}: External link in |website= (help)
  4. ^ Fernández, Jorge Mondéjar; Meunier, François J.; Cloutier, Richard; Clément, Gaël; Laurin, Michel (2022-04-06). "Life history and ossification patterns in Miguashaia bureaui reveal the early evolution of osteogenesis in coelacanths". PeerJ. 10: e13175. doi:10.7717/peerj.13175. ISSN 2167-8359. PMC 8994491. PMID 35411253.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  5. ^ Wilson, Heather M.; Daeschler, Edward B.; Desbiens, Sylvain (July 2005). "New Flat-Backed Archipolypodan Millipedes from the Upper Devonian of North America". Journal of Paleontology. 79 (4): 738–744. doi:10.1666/0022-3360(2005)079[0738:NFAMFT]2.0.CO;2. ISSN 0022-3360. S2CID 140190612.
  6. ^ a b Klug, Christian; Kerr, Johanne; Lee, Michael S. Y.; Cloutier, Richard (2021-09-24). "A late-surviving stem-ctenophore from the Late Devonian of Miguasha (Canada)". Scientific Reports. 11 (1): 19039. doi:10.1038/s41598-021-98362-5. ISSN 2045-2322. PMC 8463547. PMID 34561497.


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