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Ticinepomis

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Ticinepomis
Temporal range: Lower Ladinian, 240.91 Ma
↓
Fossil
Reconstruction
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Sarcopterygii
Class: Actinistia
Order: Coelacanthiformes
Family: Latimeriidae
Genus: †Ticinepomis
Rieppel, 1980
Type species
Ticinepomis peyeri
Rieppel, 1980
Marine life of the Early and early Middle Triassic: Ticinepomis (13)[1]

Ticinepomis is an extinct genus of coelacanth lobe-finned fish which lived during the Middle Triassic period in what is now Switzerland. It contains a single species, T. peyeri. T. peyeri specimens are most common in the Besano Formation (or Grenzbitumenzone) of Monte San Giorgio in Ticino.[2] Other coelacanths from Monte San Giorgio include a larger species (tentatively referred to Holophagus picenus) from the Besano Formation,[3] and a species of Heptanema from the Meride Limestone.[4] Larger Ticinepomis specimens have been found in the Prosanto Formation of Graubünden.[5]

Ticinepomis was originally described as being a member of the family Coelacanthidae, being similar to Coelacanthus, Holophagus and Undina.[2] Later, T. peyeri was placed in Latimeriidae.[5] The bizarre Prosanto Formation latimeriid Foreyia is thought to be T. peyeri's closest relative, as they share many features despite their drastically contrasting appearances.[6]

References

  1. ^ Scheyer et al. (2014): Early Triassic Marine Biotic Recovery: The Predators' Perspective. PLoS ONE https://doi.org/10.1371/journal.pone.0088987
  2. ^ a b Rieppel, O. (1980). "A new coelacanth from the Middle Triassic of Monte San Giorgio, Switzerland". Eclogae Geologicae Helvetiae. 73 (3): 921–939.
  3. ^ Rieppel, Olivier (1985). "A second actinistian from the Middle Triassic of Monte San Giorgio, Kanton Tessin, Switzerland". Eclogae Geologicae Helvetiae. 78: 707–713. doi:10.5169/seals-165676.
  4. ^ Renesto, Silvio; Stockar, Rudolf (2018). "FIRST RECORD OF A COELACANTH FISH FROM THE MIDDLE TRIASSIC MERIDE LIMESTONE OF MONTE SAN GIORGIO (CANTON TICINO, SWITZERLAND)" (PDF). Rivista Italiana di Paleontologia e Stratigrafia. 124 (3). doi:10.13130/2039-4942/10771. ISSN 2039-4942.
  5. ^ a b Cavin, Lionel; Furrer, H.; Obrist, C. (2013). "New coelacanth material from the Middle Triassic of eastern Switzerland, and comments on the taxic diversity of actinistans". Swiss Journal of Geosciences. 106 (2): 161–177. doi:10.1007/s00015-013-0143-7. S2CID 140189669.
  6. ^ Cavin, L.; Mennecart, B.; Obrist, C.; Costeur, L.; Furrer, H. (2017). "Heterochronic evolution explains novel body shape in a Triassic coelacanth from Switzerland". Scientific Reports. 7 (1): 13695. Bibcode:2017NatSR...713695C. doi:10.1038/s41598-017-13796-0. PMC 5651877. PMID 29057913.


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