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Tatankaceratops sacrisonorum
Taxonomy
Tatankaceratops sacrisonorum was named by Ott and Larson (2010). Its type specimen is BHI-6226, a partial skeleton, and it is a 3D body fossil. Its type locality is Niemi Ranch, which is in a Maastrichtian crevasse splay mudstone in the Hell Creek Formation of South Dakota. It is the type species of Tatankaceratops.
Synonymy list
Year | Name and author |
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2010 | Tatankaceratops sacrisonorum Ott and Larson pp. 205-206 figs. 14.1-14.17 |
2011 | Tatankaceratops sacrisonorum Maidment and Barrett p. 3 |
2012 | Tatankaceratops sacrisonorum Longrich and Field p. 4 |
2014 | Tatankaceratops sacrisonorum Longrich p. 302 |
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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.
†Tatankaceratops sacrisonorum Ott and Larson 2010
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Diagnosis
Reference | Diagnosis | |
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C. J. Ott and P. L. Larson 2010 | The new species is distinguishable from other late Maastrichtian ceratopsids based on its small adult size, lack of development of cornual sinuses, proportionally massive horncore, nasal horn the same length as post-orbital horns, nasal horncore recurved, proportionally large orbit compared to skull size, origination of postorbital horncores caudal to the orbit, no overlap of orbit by postorbital horncore, and no evidence of epijugal ossifications. |
Measurements
No measurements are available
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Source: g = genus, subo = suborder, o = order | |||||
References: Norman and Weishampel 1991, Peczkis 1995, Marsh 1875 |
Age range: Late/Upper Maastrichtian or 70.60000 to 66.00000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Late/Upper Maastrichtian | USA (South Dakota) | Tatankaceratops sacrisonorum (type locality: 97798) |