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Clarkella
Taxonomy
Clarkella was named by Walcott (1908) [Sepkoski's age data: O Trem-u O Aren Sepkoski's reference number: 1,4]. It is not extant. Its type is Polytoechia montanensis. It is the type genus of Clarkellidae.
It was assigned to Pentamerida by Sepkoski (2002); and to Clarkellidae by Williams et al. (2002).
It was assigned to Pentamerida by Sepkoski (2002); and to Clarkellidae by Williams et al. (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1908 | Clarkella Walcott pp. 110 - 111 |
| 2002 | Clarkella Sepkoski |
| 2002 | Clarkella Williams et al. p. 944 |
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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.
G. †Clarkella Walcott 1908
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†Clarkella montanensis Walcott 1905
†Clarkella testudo Nikitin and Popov 1983
†Clarkella turgida Nikitin 1956
Diagnosis
No diagnoses are available