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Tetractocrinus
Taxonomy
Tetractocrinus was named by Jaekel (1918) [Sepkoski's age data: O Llvi]. It is not extant.
It was assigned to Crinoidea by Ubaghs et al. (1978) and Sepkoski (2002).
It was assigned to Crinoidea by Ubaghs et al. (1978) and Sepkoski (2002).
Synonyms
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Synonymy list
Year | Name and author |
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1918 | Tetractocrinus Jaekel |
1976 | Tetractocrinus Arendt |
1978 | Tetractocrinus Ubaghs et al. p. T928 |
2002 | Tetractocrinus Sepkoski |
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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. †Tetractocrinus Jaekel 1918
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Invalid names: Tetractocrinus Jaekel 1918 [objective synonym]
Diagnosis
No diagnoses are available