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Ptychodus occidentalis
Taxonomy
Ptychodus occidentalis was named by Leidy (1868).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1868 | Ptychodus occidentalis Leidy |
| 1873 | Ptychodus occidentalis Leidy p. 298 |
| 1902 | Ptychodus occidentalis Hay p. 318 |
| 2001 | Ptychodus occidentalis Cicimurri p. 183 |
| 2006 | Ptychodus occidentalis Shimada et al. p. 6 figs. 6.6-6.9 |
| 2008 | Ptychodus occidentalis Shimada and Martin p. 91 fig. 4C |
| 2009 | Ptychodus occidentalis Shimada et al. p. 336 figs. 1-6 |
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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 occidentalis Leidy 1868
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, subp = subphylum | |||||
| References: Hendy et al. 2009, Wagner 2023, Carroll 1988 | |||||
Age range: base of the Late/Upper Cenomanian to the top of the Early/Lower Turonian or 100.50000 to 89.80000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Cenomanian | USA (South Dakota) | Ptychodus occidentalis (117819) | |
| Late/Upper Cenomanian | USA (Kansas) | Ptychodus occidentalis (213414 213416 213417 213418 213419) | |
| Middle Cenomanian | USA (Kansas) | Ptychodus occidentalis (94538) | |
| Middle Cenomanian | USA (South Dakota) | Ptychodus occidentalis (241420) | |
| Middle Cenomanian | USA (Colorado) | Ptychodus occidentalis (35429 213403) | |
| Middle Cenomanian | Canada (Saskatchewan) | Ptychodus occidentalis (52997) | |
| Middle Cenomanian | USA (Wyoming) | Ptychodus occidentalis (241421) | |
| Early/Lower Turonian | USA (Kansas) | Ptychodus occidentalis (213410) | |
| Early/Lower Turonian | USA (Nebraska) | Ptychodus occidentalis (213402) |