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Taxonomy
Stygiochelys estesi was named by Gaffney and Hiatt (1971). Its type specimen is AMNH 2601, a skull, and it is a 3D body fossil. Its type locality is Near Glendive (Stygiochelys estesi holotype locality), which is in a Maastrichtian terrestrial horizon in the Hell Creek Formation of Montana. It is the type species of Stygiochelys.
Synonymy list
| Year | Name and author |
|---|---|
| 1971 | Stygiochelys estesi Gaffney and Hiatt p. 3 figs. 1-6 |
| 1972 | Stygiochelys estesi Gaffney pp. 248, 266-269 figs. 20-21, 58 |
| 1989 | Stygiochelys estesi Bryant p. 36 |
| 2003 | Stygiochelys estesi Hutchison and Holroyd |
| 2015 | Stygiochelys estesi Joyce and Lyson |
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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.
†Stygiochelys estesi Gaffney and Hiatt 1971
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. S. Gaffney 1972 | [same as for genus Stygiochelys] |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||