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Brevicaudosaurus
Taxonomy
Brevicaudosaurus was named by Shang et al. (2020). Its type is Brevicaudosaurus jiyangshanensis. It is the type genus of Nothosauridae. It was considered monophyletic by Shang et al. (2020).
It was assigned to Nothosauridae by Shang et al. (2020).
It was assigned to Nothosauridae by Shang et al. (2020).
Species
B. jiyangshanensis (type species)
Entered
by K. Long on 2022-10-08; modified by K. Long on 2022-10-09
Synonymy list
| Year | Name and author |
|---|---|
| 2020 | Brevicaudosaurus Shang et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Brevicaudosaurus Shang et al. 2020
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†Brevicaudosaurus jiyangshanensis Shang et al. 2020
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Q. Shang et al. 2020 | A small nothosauroid, distinguishable from others by a set of derived characters: trunk with 14 dorsal vertebrae, tail with 30 vertebrae and shorter than skull-neck length; pre-narial region broad; orbit nearly as big as supratemporal fossa; nasal processes of premaxillae very long, extending posteriorly to meet frontals; postfrontal excluded by postorbital-parietal contact from supratemporal fossa; lateral portion of clavicle hypertrophied and heavily pachyostotic, with a pronounced ante rolateral process; humerus with a broadened mid-diaphysis; ulna with a strongly expanded proximal head; seven carpals including a tiny radial sesamoid element; pes with reduced numbers of pha anges (2-3-3-4-2); and the ungual phalanx of each digit dorsoventrally flattened, with a round distal edge. |