Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Neurankylus lithographicus was named by Larson et al. (2013). Its type specimen is TMP 2007.035.0045, a partial skeleton (incomplete carapace and plastron), and it is a 3D body fossil. Its type locality is Deadhorse Coulee (TMP), which is in a Santonian terrestrial horizon in the Milk River Formation of Canada.
Synonymy list
Year | Name and author |
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2013 | Neurankylus lithographicus Larson et al. p. 394 figs. 21.1a, 21.4, 21.5, 21.6a, c, e, g |
2015 | Neurankylus lithographicus Joyce and Lyson p. 160 |
2016 | Neurankylus lithographicus Lyson 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.
†Neurankylus lithographicus Larson et al. 2013
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Diagnosis
Reference | Diagnosis | |
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W. G. Joyce and T. R. Lyson 2015 | Neurankylus lithographicus is currently diagnosed as a baenid by presence of a processus trochlearis oticum, axillary and inguinal buttresses that reach the costals, lack of epiplastral processes and the development of mesoplastra, and as a repre- sentative of Neurankylus by its large size, smooth shell that lacks both anterior and posterior notches, complete ring of marginals, wide vertebrals and a small, undivided cervical that is taller than wide. Neurankylus lithographicus is currently differentiated from all Neurankylus by a wide vertebral V, extragulars that are smaller than the gulars and that contact one another along the midline and the lack of a posterior scalloped shell margin. |
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 Santonian or 85.80000 to 83.50000 Ma
Collections (2 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Late/Upper Santonian | Canada (Alberta) | Neurankylus lithographicus (type locality: 154706 154707) |