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Pliolophus vulpiceps
Taxonomy
Pliolophus vulpiceps was named by Owen (1858). Its type specimen is NHMUK 44115, a skull, and it is a 3D body fossil. Its type locality is Harwich (Harwich Stone Band), which is in an Eocene marine horizon in the Harwich Formation of the United Kingdom.
It was recombined as Hyracotherium vulpiceps by Cooper (1932).
It was recombined as Hyracotherium vulpiceps by Cooper (1932).
Synonymy list
| Year | Name and author |
|---|---|
| 1858 | Pliolophus vulpiceps Owen |
| 1902 | Pliolophus vulpiceps Hay p. 610 |
| 1932 | Hyracotherium vulpiceps Cooper |
| 1994 | Pliolophus vulpiceps Hooker |
| 2002 | Pliolophus vulpiceps Froehlich p. 178 |
| 2017 | Pliolophus vulpiceps Bronnert 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.
†Pliolophus vulpiceps Owen 1858
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. J. Froehlich 2002 | In this analysis Pliolophus vulpiceps can be diagnosed by four autapomorphies: postcanine diastema moderate (Character 17, 3 to 2), P3 metaconule absent (Character 30, 1 to 0), P4 hypolophid absent (Character 76, 1 to 0), and M3 heel uncrenulated (Character 103, 1 to 0). It can also be diagnosed by its phylogenetic position. It possesses the characters of the node that contains Pliolophus and all more-derived equids: upper molar ectoloph slightly W-shaped (Character 48, 0 to 1), and lower molar convergence angle <20° (Character 94, 1 to 2), but lacks the characters of the next more-derived equid clade: upper molar metaconule weak and stepped (Character 49, 0 to 1), upper molar convergence angle <90° (Character 65, 1 to 2), lower molar paracristid angle a30° (Character 87, 1 to 2), lower molar paracristid angle sharp (Character 88, 0 to 1), lower molar protolophid backwall steep (Character 90, 1 to 0), and lower preultimate molar hypoconulid closely appressed against hypolophid (Character 95, 0 to 1). |
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Ji et al. 2002, Carroll 1988, Lillegraven 1979, Nowak 1991, Hendy et al. 2009 | |||||
Age range: Early/Lower Eocene or 56.00000 to 48.07000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Eocene | United Kingdom (England) | Pliolophus vulpiceps (type locality: 68434) | |
| Early/Lower Eocene | Portugal (Região Centro) | Hyracotherium vulpiceps (79200) | |
| Ypresian | United Kingdom (England) | Hyracotherium vulpiceps (13299 38868) | |
| Ypresian | France (Marne) | Pliolophus vulpiceps (35537) |