| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ptychatractinae
Taxonomy
Ptychatractinae was named by Stimpson (1865). It is extant.
It was assigned to Turbinellidae by Beu et al. (1990).
It was assigned to Turbinellidae by Beu et al. (1990).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1865 | Ptychatractinae Stimpson |
| 1990 | Ptychatractinae Beu et al. p. 414 |
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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.
Subfm. Ptychatractinae Stimpson 1865
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G. Egestas Finlay 1926
G. Latiromitra Locard 1897
G. †Paleopsephea Wade 1926
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: base of the Middle Turonian to the top of the Altonian or 93.90000 to 15.90000 Ma
Minimum age of oldest fossil (stem group age): 89.8 Ma
Minimum age of oldest fossil (stem group age): 89.8 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Turonian | USA (Arizona) | Paleopsephea arizonensis (53504) | |
| Altonian | New Zealand | Egestas fenestrata (67897 67900) |