Elpistostege: Difference between revisions
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{{Taxobox |
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{{speciesbox |
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| fossil_range = [[Late Devonian]] |
| fossil_range = [[Late Devonian]] |
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| image = Elpistostege watsoni1.JPG |
| image = Elpistostege watsoni1.JPG |
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| image_caption = Fossil skull |
| image_caption = Fossil skull |
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| regnum = [[Animal]]ia |
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| phylum = [[Chordate|Chordata]] |
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| classis = [[Sarcopterygii]] |
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| subclassis = [[Tetrapodomorpha]] |
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| ordo = [[Elpistostegalia]] |
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|unranked_subordo = [[Stegocephalia]] |
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| familia = {{extinct}} [[Elpistostegidae]] |
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[[Thomas Stanley Westoll|Westoll]], 1938 |
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[[Thomas Stanley Westoll|Westoll]], 1938 |
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| authority = [[Thomas Stanley Westoll|Westoll]], 1938 |
| authority = [[Thomas Stanley Westoll|Westoll]], 1938 |
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| display_parents = 3 |
| display_parents = 3 |
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Revision as of 16:10, 13 December 2019
| Elpistostege Temporal range: Late Devonian
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| Genus: | Elpistostege
Westoll, 1938
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| Species: | Elpistostege watsoni
Westoll, 1938
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Elpistostege is an extinct genus of tetrapod-like vertebrate that lived in the Late Devonian period (Late Givetian to Early Frasnian). Fossils of its skull and a part of its backbone have been found in rocks of the Escuminac Formation in Quebec, Canada. A complete specimen of the animal has since been found in the same formation. It has been proposed, by the palaeontologist Richard Cloutier at Université du Québec à Rimouski, that this species may dethrone its close relative Tiktaalik in the position of the most primitive stem-tetrapod, though phylogenetic analyses have shown them to be very close relatives.
Relationships
An analysis conducted by Swartz in 2012 found Elpistostege to be the sister taxon of Tiktaalik. Both were found to be primitive members of the group Stegocephalia, along with other primitive stem-tetrapods.[1]
| Elpistostegalia |
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References
- ^ Swartz, B. (2012). "A marine stem-tetrapod from the Devonian of Western North America". PLoS ONE. 7 (3): e33683. doi:10.1371/journal.pone.0033683. PMC 3308997. PMID 22448265.
{{cite journal}}: CS1 maint: unflagged free DOI (link)
External links
- Elpistostege at Palaeos
- History of Elpistostege
- Recent Discovery of an entire well-preserved fossil of Elpistostege watsoni
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