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Circunula cotyledon
Taxonomy
Ostrea cotyledon was named by Contejean (1859). It is not extant.
It was recombined as Liostrea cotyledon by Richardt (2006); it was recombined as Circunula cotyledon by Koppka (2015).
It was recombined as Liostrea cotyledon by Richardt (2006); it was recombined as Circunula cotyledon by Koppka (2015).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1837 | Ostrea multiformis Koch and Dunker |
| 1859 | Ostrea cotyledon Contejean |
| 2006 | Liostrea cotyledon Richardt |
| 2015 | Circunula cotyledon Koppka |
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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.
†Circunula cotyledon Contejean 1859
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Invalid names: Ostrea multiformis Koch and Dunker 1837 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Steuber 2002, Kiessling 2004 | |||||
Age range: Early/Lower Kimmeridgian or 154.80000 to 152.21000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Oxfordian - Early/Lower Kimmeridgian | France (Normandy) | Ostrea multiformis (23539) | |
| Early/Lower Kimmeridgian | Switzerland (Jura) | Circunula cotyledon (185662 185666) |