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Retroceramus jurensis
Taxonomy
Retroceramus jurensis was named by Koschelkina (1969). It is not extant.
It was recombined as Mytiloceramus jurensis by Sey and Kalacheva (1980).
It was recombined as Mytiloceramus jurensis by Sey and Kalacheva (1980).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1969 | Retroceramus jurensis Koschelkina |
| 1980 | Mytiloceramus jurensis Sey and Kalacheva |
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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.
†Retroceramus jurensis Koschelkina 1969
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class | |||||
| References: Eaton 1871, Aberhan et al. 2004, Kiessling 2003 | |||||
Age range: base of the Late/Upper Aalenian to the top of the Early/Lower Bajocian or 175.60000 to 168.40000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Aalenian | Russian Federation | Mytiloceramus jurensis (129593 129816) | |
| Early/Lower Bajocian | Russian Federation | Mytiloceramus jurensis (129594 129595 129675) |