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Oepikicrinus perensae
Discussion
GIT Department of Geology, Tallinn University of Technology, Tallinn, Estonia
Taxonomy
Oepikicrinus perensae was named by Ausich et al. (2019). Its type specimen is Holotype GIT 405-254-1, a calyx, and it is a 3D body fossil. Its type locality is Jõgeva vicinity (unknown quarry), which is in an Aeronian marine limestone in the Nurmekund Formation of Estonia. It is the type species of Oepikicrinus.
Synonymy list
| Year | Name and author |
|---|---|
| 2019 | Oepikicrinus perensae Ausich et al. figs. 3, 4.1 |
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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.
†Oepikicrinus perensae Ausich et al. 2019
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. I. Ausich et al. 2019 | Dimerocrinitid with medium-sized, cone-shaped calyx, smooth plate sculpturing, infrabasal plates visible in lateral view (15% of CaH), anitaxial ridge absent with anitaxis plates broadly convex, interray regions slightly depressed, first primibrachial tetragonal, primaxil pentagonal, no axillary
secundibrachial, fixed pinnules absent, 10 free arms, each free arm with one isotomous division, rectilinear uniserial pinnulate brachials, and circular columnals. |
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum | |||||
| References: Aberhan 1992, Aberhan et al. 2004, Kiessling 2004 | |||||