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Heptacodon gibbiceps
Taxonomy
Heptacodon gibbiceps was named by Marsh (1894). It is a 3D body fossil. Its type locality is Hermosa (Oligocene), which is in a Whitneyan terrestrial horizon in the Brule Formation of South Dakota.
It was recombined as Anthracotherium gibbiceps by Matthew (1899), Hay (1902); it was recombined as Octacodon gibbiceps by Troxell (1921) and Hay (1930).
It was recombined as Anthracotherium gibbiceps by Matthew (1899), Hay (1902); it was recombined as Octacodon gibbiceps by Troxell (1921) and Hay (1930).
Synonymy list
| Year | Name and author |
|---|---|
| 1894 | Heptacodon gibbiceps Marsh p. 175 |
| 1899 | Anthracotherium gibbiceps Matthew |
| 1902 | Anthracotherium gibbiceps Hay p. 652 |
| 1921 | Octacodon gibbiceps Troxell p. 330 |
| 1930 | Octacodon gibbiceps Hay |
| 1940 | Heptacodon gibbiceps Scott p. 486 figs. Plate LI, Fig. 1 |
| 1956 | Heptacodon gibbiceps Macdonald p. 632 figs. 8, 9 |
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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.
†Heptacodon gibbiceps Marsh 1894
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. R. Macdonald 1956 | M1-3 with reduced metastyle; cingula not prominent, interrupted on lin- gual face of protocone; protocones, protoconules, and hypocones low and rounded. P4with lingual cingulum reduced or absent. |