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Ptychodus anonymus
Taxonomy
Ptychodus anonymus was named by Williston (1900).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1900 | Ptychodus anonymus Williston |
| 1902 | Ptychodus anonymus Hay p. 317 |
| 2006 | Ptychodus anonymus Shimada p. 165 fig. 4A |
| 2006 | Ptychodus anonymus Shimada et al. p. 6 figs. 6.1, 6.2 |
| 2008 | Ptychodus anonymus Shimada and Martin p. 91 fig. 4A |
| 2012 | Ptychodus anonymus Nagrodski et al. p. 78 fig. 3A |
| 2013 | Ptychodus anonymus Cook et al. p. 562 figs. 6D-H |
| 2023 | Ptychodus anonymus Amadori et al. p. 6 fig. 2I |
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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 anonymus Williston 1900
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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 Late/Upper Cenomanian to the top of the Turonian or 99.60000 to 89.80000 Ma
Collections (17 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian | Ukraine | Ptychodus anonymus (231904 231906) | |
| Late/Upper Cenomanian | USA (Kansas) | Ptychodus anonymus (213414 213416 213417 213419) | |
| Late/Upper Cenomanian | USA (Colorado) | Ptychodus anonymus (132505) | |
| Middle Cenomanian | Canada (Saskatchewan) | Ptychodus anonymus (52997) | |
| Middle Cenomanian | USA (Colorado) | Ptychodus anonymus (35429) | |
| Middle Cenomanian | USA (Kansas) | Ptychodus anonymus (94538) | |
| Turonian | USA (South Dakota) | Ptychodus anonymus (181902) | |
| Early/Lower Turonian | USA (Nebraska) | Ptychodus anonymus (213402) | |
| Early/Lower Turonian | Canada (Alberta) | Ptychodus anonymus (136242 213294) | |
| Middle Turonian | USA (New Mexico) | Ptychodus anonymus (179267) | |
| Middle Turonian | USA (Nebraska) | Ptychodus anonymus (213389) | |
| Middle Turonian | USA (Kansas) | Ptychodus anonymus (213524) |