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Eocrinidae
Taxonomy
Eocrinidae was named by Jaekel (1918).
It was assigned to Eocrinoidea by Beaver et al. (1967) and Sprinkle (1973); and to Gogiida by Parsley and Zhao (2006) and Zhao et al. (2008).
It was assigned to Eocrinoidea by Beaver et al. (1967) and Sprinkle (1973); and to Gogiida by Parsley and Zhao (2006) and Zhao et al. (2008).
Synonymy list
| Year | Name and author |
|---|---|
| 1918 | Eocrinidae Jaekel |
| 1967 | Eocrinidae Beaver et al. p. S478 |
| 1973 | Eocrinidae Sprinkle p. 76 |
| 2006 | Eocrinidae Parsley and Zhao p. 1065 |
| 2008 | Eocrinidae Zhao et al. p. 419 |
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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. †Eocrinidae Jaekel 1918
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G. †Globoeocrinus Zhao et al. 2008
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G. †Gogia Walcott 1917
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†Gogia granulosa Robison 1965
†Gogia guntheri Sprinkle 1973
†Gogia hobbsi Sprinkle 1973
†Gogia kitchnerensis Sprinkle 1973
†Gogia longidactylus Walcott 1886
†Gogia multibrachiatus Kirk 1945
†Gogia ojenai Durham 1978
†Gogia palmeri Sprinkle 1973
†Gogia parsleyi Zamora et al. 2009
†Gogia prolifica Walcott 1917
†Gogia spiralis Robison 1965
†Gogia stephenensis Sprinkle and Collins 2006
Invalid names: Eocrinus Jaekel 1918 [synonym]
G. †Sinoeocrinus
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†Sinoeocrinus lui Zhao et al. 1994
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Invalid names: Curtoeocrinus guizhouensis Zhao et al. 1994 [synonym], Paragogia globosa Zhao et al. 1994 [synonym], Sinoeocrinus curtobrachiolus Zhao et al. 1994 [synonym], Sinoeocrinus longus Zhao et al. 1994 [synonym], Sinoeocrinus minus Zhao et al. 1994 [synonym]
Invalid names: Curtoeocrinus Zhao et al. 1994 [synonym], Paragogia [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Sprinkle 1973 | Calyx plates numerous, irregularly arranged, bearing epispires. At- tachment appendage consists of irregularly multiplated holdfast or primitive stem. Ambulacral system confined to oral surface, consisting of 3-5 simple ambulacral grooves leading to groups of normal brachioles. Four genera. Early Cambrian(?)-middle Cambrian. | |
| R. L. Parsley and Y.-L. Zhao 2006 | Calyx plates numerous, commonly irregularly arranged, but in very small juveniles at least three or more welldefined series are developed under ambulacrum; thecal plates have epispires that morphologically vary considerably in ontogeny. Ambulacral system confined to upper (or oral) thecal surface, consisting of three to five simple ambulacral grooves leading to exothecal brachioles. Brachioles may be straight, twisted, or coiled. Holdfast, variable in length, irregularly multiplated with distal flattened, multiplated attachment disk. Lower to Middle Cambrian (modified from Sprinkle, 1973). |