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Arrectocrinus
Taxonomy
Arrectocrinus was named by Knapp (1969) [Sepkoski's age data: C Step-l C Step-u]. It is not extant.
It was assigned to Cladida by Sepkoski (2002); and to Catacrinidae by Webster (2006).
It was assigned to Cladida by Sepkoski (2002); and to Catacrinidae by Webster (2006).
Species
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.
G. †Arrectocrinus Knapp 1969
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†Arrectocrinus iowensis Pabian and Strimple 1980
†Arrectocrinus major Weller 1909
†Arrectocrinus texanus Weller 1909
Diagnosis
No diagnoses are available