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Ptychodus polygyrus
Taxonomy
Ptychodus polygyrus was named by Agassiz (1835). Its type specimen is BMNH 4385, 4408, 4413, a set of teeth, and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1835 | Ptychodus polygyrus Agassiz p. 54 |
| 1838 | Ptychodus polygyrus Agassiz figs. Pl 25b, figs 21-23 |
| 1839 | Ptychodus polygyrus Agassiz p. 156 figs. Pl 25, figs 4-11 |
| 1889 | Ptychodus polygyrus Woodward p. 143 |
| 1902 | Ptychodus polygyrus Hay p. 318 |
| 1970 | Ptychodus polygyrus Applegate p. 393 |
| 1977 | Ptychodus polygyrus Herman p. 74 |
| 1981 | Ptychodus polygyrus Thurmond and Jones p. 42 |
| 2023 | Ptychodus polygyrus Amadori et al. p. 4 fig. 2E,H |
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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.
†Ptychodus polygyrus Agassiz 1835
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| References: Wagner 2023, Carroll 1988 | |||||
Age range: base of the Cenomanian to the top of the Early/Lower Campanian or 100.50000 to 70.60000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian | Ukraine | Ptychodus polygyrus (231904) | |
| Middle Turonian | USA (New Mexico) | Ptychodus polygyrus (179267) | |
| Middle Turonian | Poland | Ptychodus polygyrus (157553) | |
| Late/Upper Santonian - Early/Lower Campanian | USA (Alabama) | Ptychodus polygyrus (81931) |