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Tetragonocrinidae
Taxonomy
Tetragonocrinidae was named by Stukalina (1980). It is not extant. Its type is Tetragonocrinus.
It was assigned to Tetragonocrinida by Ausich (1998).
It was assigned to Tetragonocrinida by Ausich (1998).
Subtaxa
Ramseyocrinus, Tetragonocrinus (type genus)
Synonyms
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Synonymy list
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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.
Fm. †Tetragonocrinidae Stukalina 1980
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G. †Ramseyocrinus Bates 1968
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†Ramseyocrinus argentinus Guensburg and Waisfeld 2015
†Ramseyocrinus cambriensis Hicks 1873
G. †Tetragonocrinus Yeltyscheva 1964
Invalid names: Ramseyocrinidae Donovan 1984 [synonym]
Diagnosis
No diagnoses are available