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Eudinoceras crassum
Taxonomy
Eudinoceras crassum was named by Tong and Tang (1977). Its type specimen is IVPP V4927, a tooth, and it is a 3D body fossil. Its type locality is Dongjun formation, Baibi, Tiandong county, Guangxizhuangzu zizhiqu, which is in an Eocene terrestrial lime mudstone/limestone in the Dongjun Formation of China.
Synonymy list
| Year | Name and author |
|---|---|
| 1977 | Eudinoceras crassum Tong and Tang |
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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.
†Eudinoceras crassum Tong and Tang 1977
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Y. Tong and Y. Tang 1977 | Compared with Eudinoceras mongoliensis and Eudinoceras kholobochiensis this species is more robust. Upper Incisiva: tusk-like, the basal transverse section is elliptic in shape, near the top it is triangular. Second upper molar: V-shaped angle of the ridge of the metaconus is relatively small, about 30°; metaconus and protoconus are near the lingual side, the protoloph and the anterior wing of the metaconus ridge are nearly rectangular to the vertical axis of the tooth; Inner cingulum long, it passes the basis of protocone and metacone. Lower P3-4: posterior smaller than anterior, V-shaped ridge with small angle, cristid obliqua is degenerated, it is also near the lingual side, the paralophid is week. Third lower molar: cristid obliqua week, extends up to the metaconid, the end is swallen, metalophid and hypolophid strong and nearly straight to the axis of the tooth. |
Measurements
No measurements are available
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| Source: o = order, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988 | |||||
Age range: Late/Upper Eocene or 37.20000 to 33.90000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Eocene | China (Guangxizhuangzu zizhiqu) | Eudinoceras crassum (type locality: 37025) |