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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Ostrea sequana was named by Thurmann and Etallon (1862).
It was recombined as Liostrea sequana by Pugaczewska (1971); it was recombined as Helvetostrea sequana by Koppka (2015).
It was recombined as Liostrea sequana by Pugaczewska (1971); it was recombined as Helvetostrea sequana by Koppka (2015).
Synonymy list
| Year | Name and author |
|---|---|
| 1862 | Ostrea sequana Thurmann and Etallon |
| 1971 | Liostrea sequana Pugaczewska |
| 2015 | Helvetostrea sequana 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.
†Helvetostrea sequana Thurmann and Etallon 1862
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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 2003, Aberhan et al. 2004 | |||||
Age range: Early/Lower Kimmeridgian or 154.80000 to 152.21000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Kimmeridgian | Switzerland (Jura) | Helvetostrea sequana (185662 185666) |