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Eocrinus longidactylus
Taxonomy
Eocystites longidactylus was named by Walcott (1886) [Lectotype USNM 15315 mentioned in the text.]. Its type specimen is USNM 15315 and is a 3D body fossil.
It was recombined as Eocrinus longidactylus by Jaekel (1918); it was recombined as Gogia longidactylus by Robison (1965) and Sprinkle (1973).
It was recombined as Eocrinus longidactylus by Jaekel (1918); it was recombined as Gogia longidactylus by Robison (1965) and Sprinkle (1973).
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.
†Eocrinus longidactylus Walcott 1886
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. A. Robison 1965 | Brachioles number 8 to 16, and possibly more; nonspiraled. Thecal plates irregularly arranged and of nonuniform size; number probably ranges up to as many as 500; shape and ornamentation vary considerably. Plates in upper part of theca commonly possess small granules, whereas plates in lower part of theca usually are smooth. Sutural pores usually restricted to plates in upper part of theca. Hohl- wurzel extremely long and slender; distal end unknown. |
Measurements
No measurements are available
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| Source: g = genus, c = class, p = phylum | |||||
| References: Aberhan 1992, Caron and Jackson 2008, Aberhan et al. 2004 | |||||