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Heteroptychodus steinmanni
Taxonomy
Heteroptychodus steinmanni was named by Yabe and Obata (1930). It is not extant.
Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Heteroptychodus steinmanni Yabe and Obata figs. 6-8 |
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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.
†Heteroptychodus steinmanni Yabe and Obata 1930
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| References: Carroll 1988, Wagner 2023 | |||||
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Barremian | Japan (Gunma) | Heteroptychodus steinmanni (229065) | |
| Late/Upper Barremian | Thailand (Changwat) | Heteroptychodus steinmanni (201767) | |
| Late/Upper Barremian | Thailand (Udon Thani) | Heteroptychodus steinmanni (140552) | |
| Late/Upper Barremian | Thailand (Sakon Nakhon) | Heteroptychodus steinmanni (79489) | |
| Aptian | Thailand (Nakhon Ratchasima) | Heteroptychodus steinmanni (99337) | |
| Aptian - Albian | Thailand (Khon Kaen) | Heteroptychodus steinmanni (224555) | |
| Aptian - Albian | Thailand (Ubon Ratchathani) | Heteroptychodus steinmanni, Heteroptychodus steinmanni (52346) | |
| Aptian - Albian | Thailand (Kalasin) | Heteroptychodus steinmanni (97765) |