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Asprosaurus bibongriensis
Taxonomy
Asprosaurus bibongriensis was named by Park et al. (2015). Its type specimen is KDRC-BB4, a partial skeleton (right jugal, partial squamosal, partial left quadrate, left pterygoid, partial left mandible, left scapulocoracoid, left humerus, a metacarpal, part of a rib or), and it is a 3D body fossil. Its type locality is Boseong Bibong-ri Dinosaur Egg Site 1, which is in a Santonian/Campanian fluvial sandstone/mudstone in the Seonso Conglomerate Formation of South Korea. It is the type species of Asprosaurus.
Synonymy list
| Year | Name and author |
|---|---|
| 2015 | Asprosaurus bibongriensis Park et al. p. 293 fig. 3 |
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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.
†Asprosaurus bibongriensis Park et al. 2015
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J.-Y. Park et al. 2015 | A very large, robust-limbed, terrestrial lizard (skull length ~180e200 mm) resembling monstersaurian and varaniform anguimorphs (sensu Conrad et al., 2011a) in having a deep, almost vertical dentary alveolar margin with no subdental shelf; a Meckelian fossa that is anteroventrally positioned; a small adductor fossa; no posterodorsal coronoid process on the dentary; a reduced splenial-dentary contact; and a splenial that does not extend posterior to the apex of the coronoid process. Differs from previously described Asian Late Cretaceous anguimorph lizards including Cherminotus, Chianghsia, Estesia, Gobiderma, Ovoo, Paravaranus, Parviderma, Proplatynotia, Saniwides, and Telmasaurus in the combination of a strongly angulated jugal in which the postorbital process is wider than the suborbital process; a complete postorbital bar; a concave medial margin to the pterygoid palatal plate; a straight dentary-postdentary contact but no intramandibular joint; a posteriorly shallow, rather than triangular, splenial; no cranial osteoderms; and a convexo-concave ventral jaw margin. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Carroll 1988, Kiessling 2004 | |||||
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Santonian - Campanian | South Korea (Jeollanam-do) | Asprosaurus bibongriensis (type locality: 52981) |