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Taxonomy
Smithosaurus was named by Vasilyan et al. (2022). Its type is Smithosaurus echzellensis.
It was assigned to Anguinae by Vasilyan et al. (2022).
It was assigned to Anguinae by Vasilyan et al. (2022).
Species
S. echzellensis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2022 | Smithosaurus Vasilyan 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. †Smithosaurus Vasilyan et al. 2022
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†Smithosaurus echzellensis Vasilyan et al. 2022
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Vasilyan et al. 2022 | Anguine lizard distinguishable from Anguis, Pseudopus and Ophisaurus by two autapomorphic features:
(1) the parietal table gradually expands laterally in the anterior direction in an extreme way; thus, it appears to be distinctly constricted at the level of the parietal foramen or slightly posterior to it. The later- al margins of the table markedly diverge anterolaterally from this point, inclining at an angle of about 30° from the median plane. Posteriorly located lateral margins diverge gradually posterolaterally and continue to more-or-less straight supratemporal processes. Due to the lateral expansion of the parietal table, the anterolateral corner of the parietal ta- ble reaches further laterally than the supratemporal process. The ornamented surface on the dorsal side of the bone gradually widens anteriorly as well (in contrast to being rectangular); (2) the parietal cranial crests diverge in the anterior direction to form a V that separates the cranial vault from the muscular surface laterally (the anteriormost sec- tion of the crests bents laterally rather than medially). |
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Behler and King 1979, Hendy et al. 2009, Carroll 1988 | |||||