Trachythyone Studer, 1876
publication ID |
https://doi.org/10.11646/zootaxa.3693.3.10 |
publication LSID |
lsid:zoobank.org:pub:2E8B5BE0-13E3-4FE0-910B-9EC28611485F |
DOI |
https://doi.org/10.5281/zenodo.6158747 |
persistent identifier |
https://treatment.plazi.org/id/B63B87B5-FFB8-FF88-54C6-4DE640C9A1EB |
treatment provided by |
Plazi (2016-04-14 17:52:07, last updated 2024-11-29 17:06:09) |
scientific name |
Trachythyone Studer, 1876 |
status |
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Genus Trachythyone Studer, 1876 View in CoL
Diagnosis (amended from O’Loughlin & O’Hara, 1992). Tentacles 10, ventral two reduced; tube feet restricted to radii or scattered, at least dorsally; calcareous ring simple, without posterior prolongations, plates anteriorly extended, notched posteriorly; body wall ossicles comprising a superficial layer of cups and a deeper layer of perforated plates; cups shallow or deep with usually a spinous or knobbed rim and a 4–8 holed base which may also be spinous, cups sometimes reduced or appear as X-shaped deposits which are often present in addition to complete baskets; plates usually large, smooth or slightly knobbed and single-layered, up to 1 mm in length; tube feet and tentacles with perforated rods and/or plates; end-plates usually present.
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