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Tallinnicrinus toomae
Taxonomy
Tallinnicrinus toomae was named by Cole et al. (2020). Its type specimen is TUG 170-2, a calyx, and it is a 3D body fossil. Its type locality is Porkuni Quarry, Siuge Member, which is in a Porkuni perireef or subreef lime mudstone/chert in the Ärina Formation of Estonia. It is the type species of Tallinnicrinus.
Synonymy list
| Year | Name and author |
|---|---|
| 2020 | Tallinnicrinus toomae Cole et al. figs. 1, 2 |
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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.
†Tallinnicrinus toomae Cole et al. 2020
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. R. Cole et al. 2020 | Anthracocrinid with very low, flat-based calyx; convex, nodose ornamentation; infrabasals restricted to basal concavity; basals and radials along flat base of calyx and only marginally visible in side view; basals and radials in lateral contact, forming a single circlet of 10 plates; interrays in contact with the tegmen; proximal interray plating 1-2-2 or 1-2-3; proximal posterior plating P-3; three or four fixed tertibrachials; 20 free arm openings grouped by half-rays around the calyx margin; fixed pinnules flanking each half-ray. |
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum | |||||
| References: Aberhan 1992, Kiessling 2004, Aberhan et al. 2004 | |||||