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Mengshanosaurus
Taxonomy
Mengshanosaurus was named by Yuan et al. (2021). Its type is Mengshanosaurus minimus.
It was assigned to Neochoristodera by Yuan et al. (2021).
It was assigned to Neochoristodera by Yuan et al. (2021).
Species
M. minimus (type species)
Entered
by M. Uhen on 2025-02-13; modified by M. Uhen on 2025-02-13
Synonymy list
| Year | Name and author |
|---|---|
| 2021 | Mengshanosaurus Yuan et al. p. 216 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. Yuan et al. 2021 | Mengshanosaurus minimus differs from other neochoristoderes in the conformation of the lacrimal foramen as a large opening between the prefrontal and lacrimal. Differs from Champsosaurus in a large lacrimal (greatly reduced in Champsosaurus), and fusion of the postorbital and postfrontal. Differs from Tchoiria, Ikechosaurus, and Simoedosaurus in placement of the craniomandibular joint anterior to the occipital condyle. Differs from the condition in Simoedosaurus and Ikechosaurus in the parietal articulating with the squamosal at the posterior half of the supratemporal fenestra and the frontals clearly widen posteriorly. Differs from Simoedosaurus in a well-developed postorbital process of the jugal and the interpterygoid vacuity located at the level of the suborbital fenestra. Differs from Ikechosaurus in a smooth U-shaped anterior margin of the parasphenoid. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, p = phylum, uc = unranked clade | |||||
| References: Kiessling 2004, Bambach et al. 2007, Hendy et al. 2009, Carroll 1988 | |||||
Age range: base of the Berriasian to the top of the Valanginian or 143.10000 to 132.60000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Berriasian - Valanginian | China (Shandong) | M. minimus (200957) |