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Ovoo gurvel
Taxonomy
Ovoo gurvel was named by Norell et al. (2007). Its type specimen is IGM 3/767, a skull (partial skull with the braincase and mandibles missing), and it is a 3D body fossil. Its type locality is Little Ukhaa, which is in a Campanian terrestrial sandstone in the Djadokhta Formation of Mongolia. It is the type species of Ovoo.
Synonymy list
| Year | Name and author |
|---|---|
| 2007 | Ovoo gurvel Norell et al. pp. 3-10 figs. 4-6 |
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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.
†Ovoo gurvel Norell et al. 2007
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. A. Norell et al. 2007 | Distinguished from Cherminotus longifrons and other closely related varanoids by the following character states: nasals paired; presence of aperture between premaxilla and maxilla (the premaxillary fenestra sensu Gauthier, 1982; see also Gao and Norell, 1998); anteromedial process of maxilla separating premaxilla from septomaxilla; dorsal septomaxillary foramen strongly reduced and close to midline (from Gao and Norell, 2000). Sharing with Aiolosaurus oriens character states including presence of a premaxilla-maxilla aperture; dorsal septomaxillary foramen strongly reduced and close to midline. Distinguished from Aiolosaurus oriens and other closely related varanoids by the following derived character states: presence of paired mystery bones roofing the nasal/frontal suture; absence of dermal sculpturing on the skull bones (region unpreserved in Aiolosaurus oriens); premaxillary nasal process broader than deep; premaxilla-maxilla aperture large and rounded; premaxillary teeth 12 (as opposed to 7 in Aiolosaurus oriens); maxillary teeth 12–13 (Aiolosaurus oriens 10 at most). |
Measurements
No measurements are available
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| Source: superf = superfamily, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009, Pianka and Vitt 2003 | |||||