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Amphitherium rixoni
Taxonomy
Amphitherium rixoni was named by Butler and Clemens (2001). Its type specimen is BMNH 36822, a mandible (right dentary), and it is a 3D body fossil. Its type locality is Stonesfield Slate quarries, which is in a Bathonian marginal marine sandstone in the Taynton Limestone Formation of the United Kingdom.
Synonymy list
| Year | Name and author |
|---|---|
| 2001 | Amphitherium rixoni Butler and Clemens pp. 7-9 figs. 1A, 5F-H, 6, 7B |
| 2004 | Amphitherium rixoni Kielan-Jaworowska et al. pp. 380, 395 |
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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.
†Amphitherium rixoni Butler and Clemens 2001
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. M. Butler and W. A. Clemens 2001 | Differing from Amphitherium prevostii in: (1) smaller size of its postcanine dentition; (2) talonid ridge of P/5 extends directly posteriorly from the main cusp (protoconid) and there is not anexpansion in the metaconid region; and (3) metaconid of M/1 is similar to that of M/2 in its fully lingual position. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Carroll 1988, Hopson 1973, Luo et al. 2003 | |||||
Age range: Middle Bathonian or 167.70000 to 164.70000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Bathonian | United Kingdom (England) | Amphitherium rixoni (type locality: 59357) |