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Eromangasaurus carinognathus
Taxonomy
Eromangasaurus carinognathus was named by Kear (2005). Its type specimen is QM F11050, a skull, and it is a 3D body fossil.
It was synonymized subjectively with Eromangasaurus australis by Poropat et al. (2023).
It was synonymized subjectively with Eromangasaurus australis by Poropat et al. (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 2005 | Eromangasaurus carinognathus Kear p. 793 |
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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.
†Eromangasaurus carinognathus Kear 2005
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. P. Kear 2005 | Elasmosaurid plesiosaur uniquely distinguished by presence of seven premaxillary teeth (three lateral pairs, one midline) and elongate (enforced sensu O'Keefe, 2001) mandibular symphysis bearing prominent keel along posteroventral midline. In addition, the taxon displays a combination of characters variably developed in other elasmosaurids. These include: dorsomedial process of premaxilla contacting anterior extension of parietal; margin of temporal fenestra lacking obvious contribution from frontal; pineal foramen probably present but not bordered by frontal; contact between squamosal and postorbital absent;
jugal lacking obvious contribution to narrow bar between orbit and temporal emargination; quadrate flange of pterygoid contacting both quadrate and squamosal; pterygoids in contact posterior to posterior interpterygoid vacuity but covered by posterior parasphenoid process; parasphenoid narrow and keeled along exposed posterior length; anterior portion of Meckelian canal closed over; mandibular symphysis formed by dentaries only; coronoid lacking obvious exposure on lateral surface of mandible; caniniform teeth present on maxilla; and singleheaded axial rib with base confined to axis centrum. |