Chaetasteridae Sladen, 1889

Gale, Andrew S., 2020, The fossil record of the asteroid (Echinodermata) family Chaetasteridae Sladen 1889 and subfamily Hyalothricinae Fisher, 1911, Zootaxa 4858 (1), pp. 144-150 : 144-145

publication ID	https://doi.org/ 10.11646/zootaxa.4858.1.11
publication LSID	lsid:zoobank.org:pub:93DB37F6-2564-4E3A-AA25-4A842994BE68
DOI	https://doi.org/10.5281/zenodo.4411403
persistent identifier	https://treatment.plazi.org/id/0397B63B-5272-FFDA-FF13-F890675CFF5D
treatment provided by	Plazi
scientific name	Chaetasteridae Sladen, 1889
status

Treatment

Family Chaetasteridae Sladen, 1889 View in CoL

Amended diagnosis. Arms long, narrow, subcylindrical, disc small, interradii acutely angled. Arms constructed of 7 to 13 well defined rows of extraxial ossicles; abactinal, marginal and actinal ossicles of the arm of similar size, all carry raised central ridge. Abactinal ossicles of disc small, round to oval. (modified from Clark & Downey, 1992).

Included genera. Chaetaster Müller & Troschel, 1842 , Arthraster Forbes, 1848 .

Remarks. The diagnosis of this small family, previously unknown in the fossil record, is amended here to include the Cretaceous genus Arthraster .