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Ptychomyinae
Taxonomy
Ptychomyidae was named by Keen (1969). It is extant.
It was reranked as the family Ptychomyinae by Carter et al. (2011).
It was assigned to Arcticacea by Vokes (1980); to Arcticoidea by Nevesskaja (2009); to Crassatelloidea by Bouchet et al. (2010); and to Crassatellidae by Carter et al. (2011).
It was reranked as the family Ptychomyinae by Carter et al. (2011).
It was assigned to Arcticacea by Vokes (1980); to Arcticoidea by Nevesskaja (2009); to Crassatelloidea by Bouchet et al. (2010); and to Crassatellidae by Carter et al. (2011).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1969 | Ptychomyidae Keen |
| 1980 | Ptychomyidae Vokes p. 159 |
| 2009 | Ptychomyidae Nevesskaja |
| 2010 | Ptychomyidae Bouchet et al. |
| 2011 | Ptychomyinae Carter et al. p. 13 |
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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.
Fm. Ptychomyinae Keen 1969
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G. †Ptychomya
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Subg. †Ptychomya (Pleuroconcha)
†Ptychomya densicostata Nagao 1934
†Ptychomya stantoni Cragin 1905
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, superf = superfamily | |||||
| References: Eames 1951, Sanchez Roig 1926 | |||||
Age range: base of the Early/Lower Kimmeridgian to the top of the Albian or 154.80000 to 100.50000 Ma
Collections (49 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Kimmeridgian | USA (Texas) | Ptychomya stantonii (69010) | |
| Kimmeridgian | Mexico (Chiapas) | Ptychomya stantoni (98672) | |
| Kimmeridgian | Chile (Coquimbo) | Ptychomya sp. (221620) | |
| Tithonian | Chile | Ptychomya koeneni (57148) | |
| Berriasian | Chile | Ptychomya koeneni (57145) | |
| Neocomian | Japan (Gumma) | Ptychomya densicostata (40488) | |
| Neocomian | Japan (Iwate) | Ptychomya densicostata (39982) | |
| Neocomian | Japan (Wakayama) | Ptychomya densicostata (40659) | |
| Early/Lower Valanginian | Argentina (Mendoza) | Ptychomya sp. (44669 44710) | |
| Early/Lower Valanginian | Switzerland | Ptychomya robinaldina (2225) | |
| Late/Upper Valanginian | Argentina | Ptychomya koeneni (37785) Ptychomya sp. (37762) | |
| Valanginian | France | Ptychomya germani (2223) Ptychomya robinaldina (2222) | |
| Valanginian - Hauterivian | Chile (Coquimbo) | Ptychomya koeneni (221556) | |
| Hauterivian - Valanginian | Italy (Sardinia) | Ptychomya plana (2089) | |
| Early/Lower Hauterivian | Argentina | Ptychomya koeneni (44743 44744) Ptychomya sp. (61593 61597 61598 61604 61643 61645) Ptychomya vacaensis (44680) | |
| Early/Lower Hauterivian | Argentina (Neuquen) | Ptychomya koeneni (47202) Ptychomya sp. (50558 50562 50565 50568 50572 50575 50576 50577 50581 50582) | |
| Hauterivian | Switzerland | Ptychomya robinaldina, Ptychomya neocomiensis (2198) | |
| Hauterivian | Chile (Coquimbo) | Ptychomya koeneni (222008) | |
| Late/Upper Hauterivian | Argentina | Ptychomya sp. (151710) | |
| Early/Lower Aptian | Chile (Copiapó) | Ptychomya sp. (223023) | |
| Aptian | Trinidad and Tobago | Ptychomya sp. A, Ptychomya sp. B (1868) | |
| Aptian | United Kingdom (England) | Ptychomya robinaldina (1855) | |
| Aptian | Japan (Iwate) | Ptychomya densicostata (40553) | |
| Late/Upper Aptian | Mexico (Baja California) | Ptychomya densicostata (1878) | |
| Late/Upper Aptian | Japan | Ptychomya sp. (91257) | |
| Late/Upper Aptian | Chile | Ptychomya sp. (64163) | |
| Albian | Japan (Kumamoto) | Ptychomya densicostata (40469 40601) |