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Cylichna attonsa
Taxonomy
Cylichna cylindracea attonsa was named by Carpenter (1864). It is extant.
It was recombined as Cylichna attonsa by Grant, IV and Gale (1931), Woodring and Bramlette (1950), Hendy (2020).
It was recombined as Cylichna attonsa by Grant, IV and Gale (1931), Woodring and Bramlette (1950), Hendy (2020).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1864 | Cylichna cylindracea attonsa Carpenter p. 647 |
| 1931 | Cylichna attonsa Grant, IV and Gale pp. 454 - 455 |
| 1950 | Cylichna attonsa Woodring and Bramlette p. 48 |
| 2020 | Cylichna attonsa Hendy |
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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.
Cylichna attonsa Carpenter 1864
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Hendy et al. 2009 | |||||
Age range: base of the Gelasian to the top of the Late/Upper Pleistocene or 2.58800 to 0.01170 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gelasian | USA (California) | Cylichna attonsa (189765) | |
| Late/Upper Pleistocene | USA (California) | Cylichna attonsa (37672 59063 96566 160361 219029) |