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Amphicyon major
Taxonomy
Amphicyon major was named by De Blainville (1841). Its type specimen is MP Sa 1 and is not a trace fossil.
Subspecies
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1841 | Amphicyon major De Blainville |
| 1853 | Amphicyon cultridens Pomel p. 72 |
| 1965 | Amphicyon major Kuss p. 25 |
| 1998 | Amphicyon major Hunt, Jr. p. 213 |
| 2001 | Amphicyon major Sach and Heizmann p. 28 |
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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.
†Amphicyon major De Blainville 1841
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†Amphicyon major major Blainville 1841
Invalid names: Amphicyon cultridens Pomel 1853 [objective synonym]
†Amphicyon major eppelsheimensis Weitzel 1930
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. E. Kuss 1965 | GroBe Typus-Art des Genus Amphicyon, Lange des Ml ± 33-36 mm. C relativ schwach gekriimmt, ihre inn ere Kante bei Ansicht von der Innenseite fast mit dem Vorderrand kongruent. AuBenseite des C sup. gefurcht. II und J2 transversal abgeplattet. J3 erheblich starker, mit spitzer zuriickgebogener Krone. I info unbekannt. Pl-3 mit extrem niedriger Krone (obere etwas hOher als untere). Schneide bei pl-3 diagonal. P4 mit Spur eines Vorderzackens. p4 im Helvetium mit kraftigem Tritocon, der sich bei chronologisch jiingeren Formen bis zum vOlligen Verlust abschwacht; zugleich wird das vordere Inneneck verschmalert und etwas zuriickgezogen. Talonid des Ml niemals breiter als die ProtoconidBasis; die Schneide seines Hypoconides in sich gebogen und sowohl auf den Hinterhang des Protoconides als auch auf das Entoconid iibergreifend; dieses flach, jedoch mit mindestens einer deutlichen Erhebung. Ml und M2 meist mit betontem Metaconulus. Furche zwischen Protocon und Innencingulum am M2 flacher als bei A. steinheimensis.[Large type species of the genus Amphicyon, length of the ml ± 33-36 mm. C relatively slightly curved, its inner edge almost congruent with the anterior edge when viewed from the inside. Outside of C sup. furrowed. II and J2 transversely flattened. J3 considerably stronger, with a pointed, bent-back crown. I info unknown. Pl-3 with extremely low crown (upper slightly higher than lower). Cut diagonally at pl-3. P4 with trace of a front spike. p4 in the Helvetium with a strong tritocon, which weakens to the point of complete loss in chronologically younger forms; At the same time, the front inner corner is narrowed and pulled back slightly. Talonid of the Ml never wider than the protoconid base; the cutting edge of its hypoconid curved in on itself and overlapping both the posterior slope of the protoconid and the entoconid; this flat, but with at least one clear elevation. Ml and M2 usually with emphasized metaconulus. Furrow between protocon and inner cingulum on M2 shallower than in A. steinheimensis.] |
Measurements
No measurements are available
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| Source: subf = subfamily, subc = subclass, c = class, subp = subphylum | |||||
| References: Ji et al. 2002, Carroll 1988, Hunt 1998, Lillegraven 1979, Hendy et al. 2009 | |||||
Collections (17 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Miocene | Germany | Amphicyon major (70338) | |
| Early/Lower Miocene - Middle Miocene | Spain (Castile-La Mancha) | Amphicyon major (136269) | |
| Burdigalian | Germany (Baden-Württemberg) | Amphicyon major (49102) | |
| Burdigalian | Portugal (Lisbon) | Amphicyon major (36632) | |
| Burdigalian | Spain (Valencia) | Amphicyon major (40031) | |
| Burdigalian - Langhian | Germany (Baden-Wurttemberg) | Amphicyon major (106003) | |
| MN 4 | France (Midi-Pyrénées) | Amphicyon major (71873) | |
| MN 5 | Türkiye (Bursa) | Amphicyon major (68547) | |
| MN 5 - MN 6 | Portugal | Amphicyon major (65912) | |
| Langhian - Serravallian | France (Midi-Pyrenees) | Amphicyon major (32191) | |
| Middle Miocene | Spain (Madrid) | Amphicyon major (197673) | |
| Middle Miocene | France (Gers) | Amphicyon major (143472) | |
| Langhian - Tortonian | France (Midi-Pyrenees Region) | Amphicyon major (31775) | |
| MN 6 | Slovakia (Bratislava) | Amphicyon major (69711) | |
| MN 6 | Portugal (Santarém) | Amphicyon major (38139) | |
| Serravallian - Tortonian | France (Maine-et-Loire) | Amphicyon major (54136) | |
| Vallesian | Spain (Segovia) | Amphicyon major (40768) |