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Zapsosaurus sceliphros
Taxonomy
Zapsosaurus sceliphros was named by Gao and Norell (2000). Its type specimen is IGM 3/71 (MAE 255/92-10), a skull, and it is not a trace fossil. Its type locality is Tögrögiin Shiree [AMNH], which is in a Campanian eolian sandstone in the Djadokhta Formation of Mongolia. It is the type species of Zapsosaurus.
Synonymy list
Year | Name and author |
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2000 | Zapsosaurus sceliphros Gao and Norell p. 25 fig. 7 |
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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.
†Zapsosaurus sceliphros Gao and Norell 2000
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Diagnosis
Reference | Diagnosis | |
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K. Gao and M. A. Norell 2000 | Distinguished from possibly closely related Anchaurosaurus gilmorei by having the following character states: prefrontal bosses weakly developed; posterior border of parietal strongly flanged for attachment of axial musculature; Meckelian canal closed below anterior three-fourths of tooth row; splenial strongly reduced, covering only posterior one fourth of Meckelian canal; lateral surface of coronoid dorsal process bears vertical crest associated with a ventral tubercle; presence of distinct medial flange of surangular anteromedial to craniomandibular joint; mandibular fossa strongly shortened, posteriorly terminating halfway between coronoid and craniomandibular joint; marginal teeth having short shafts, but strongly flared crowns. |
Measurements
No measurements are available
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Source: c = class, subp = subphylum, uc = unranked clade | |||||
References: Carroll 1988, Hendy et al. 2009 |
Age range: Late/Upper Campanian or 83.50000 to 70.60000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Late/Upper Campanian | Mongolia (Omnogov) | Zapsosaurus sceliphros (type locality: 51033) |