Trinacromerum: Difference between revisions
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{{Short description|Extinct genus of reptiles}} |
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{{Automatic taxobox |
{{Automatic taxobox |
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|fossil_range = [[Late Cretaceous]] |
|fossil_range = [[Late Cretaceous]] |
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|image = |
|image = Trinacromerum Royal Ontario Museum.jpg |
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|image_caption = |
|image_caption = Mounted ''T. kirki'' cast at the [[Royal Ontario Museum]] |
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|taxon = Trinacromerum |
|taxon = Trinacromerum |
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|authority = Cragin, 1888 |
|authority = Cragin, 1888 |
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==Classification== |
==Classification== |
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[[File:ROM - Trinacromerum.jpg|thumb|Profile view of a cast of a Manitoban specimen of ''Trinacromerum kirki'']] |
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| ⚫ | Below is a cladogram of polycotylid relationships from Ketchum & Benson, 2011.<ref name=Marmornectes>{{cite journal |author1=Hilary F. Ketchum |author2=Roger B. J. Benson |year=2011 |title=A new pliosaurid (Sauropterygia, Plesiosauria) from the Oxford Clay Formation (Middle Jurassic, Callovian) of England: evidence for a gracile, longirostrine grade of Early-Middle Jurassic pliosaurids |journal=Special Papers in Palaeontology |volume=86 |pages=109–129 }}</ref> |
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| ⚫ | Below is a cladogram of polycotylid relationships from Ketchum & Benson, 2011.<ref name=Marmornectes>{{cite journal | |
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{{clade| style=font-size:85%;line-height:85% |
{{clade| style=font-size:85%;line-height:85% |
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==External links== |
==External links== |
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{{Wikispecies}} |
{{Wikispecies}} |
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{{Plesiosauria|Leptocleidia}} |
{{Plesiosauria|Leptocleidia}} |
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[[Category:Late Cretaceous plesiosaurs of North America]] |
[[Category:Late Cretaceous plesiosaurs of North America]] |
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[[Category:Polycotylids]] |
[[Category:Polycotylids]] |
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[[Category:Sauropterygian genera]] |
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[[Category:Fossil taxa described in 1888]] |
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Latest revision as of 09:11, 18 November 2024
| Trinacromerum Temporal range: Late Cretaceous
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| Mounted T. kirki cast at the Royal Ontario Museum | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Superorder: | †Sauropterygia |
| Order: | †Plesiosauria |
| Family: | †Polycotylidae |
| Genus: | †Trinacromerum Cragin, 1888 |
| Species | |
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Trinacromerum is an extinct genus of sauropterygian reptile, a member of the polycotylid plesiosaurs. It contains two species, T. bentonianum and T. kirki. Specimens have been discovered in the Late Cretaceous fossil deposits of what is now modern Kansas and Manitoba.[1]
Description
[edit]
Trinacromerum was 3 meters (9.8 feet) long. Its teeth show that it fed on small fish.[1]
The long flippers of Trinacromerum enabled it to achieve high swimming speeds.[1] Its physical appearance was described by Richard Ellis as akin to a "four-flippered penguin."[2] Its name means "three tipped femur".
Classification
[edit]
Below is a cladogram of polycotylid relationships from Ketchum & Benson, 2011.[3]
See also
[edit]
References
[edit]- ^ a b c Ellis, Richard (2003). Sea Dragons: Predators of the Prehistoric Oceans. University Press of Kansas. p. 189. ISBN 0-7006-1269-6.
- ^ Ellis, 190
- ^ Hilary F. Ketchum; Roger B. J. Benson (2011). "A new pliosaurid (Sauropterygia, Plesiosauria) from the Oxford Clay Formation (Middle Jurassic, Callovian) of England: evidence for a gracile, longirostrine grade of Early-Middle Jurassic pliosaurids". Special Papers in Palaeontology. 86: 109–129.
External links
[edit]
Wikispecies has information related to Trinacromerum.
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