Sphaeriodiscus Fisher 1910

Mah, Christopher L., 2024, Two New Taxa of Goniasteridae (Asteroidea, Echinodermata) and Noteworthy Observations of Deep-Sea Asteroidea by the NOAA Ship Okeanos Explorer in the North and Tropical Atlantic, Zootaxa 5432 (4), pp. 461-508 : 494-495

publication ID	https://doi.org/ 10.11646/zootaxa.5432.4.2
publication LSID	lsid:zoobank.org:pub:83AD2C59-8FC8-43AA-9576-68C34B88FE51
DOI	https://doi.org/10.5281/zenodo.10910765
persistent identifier	https://treatment.plazi.org/id/FD09D342-4818-FFC4-FF77-F9BCFB694757
treatment provided by	Plazi
scientific name	Sphaeriodiscus Fisher 1910
status

Treatment

Sphaeriodiscus Fisher 1910 View in CoL

Sphaeriodiscus Fisher, 1910: 171 View in CoL ; 1911: 167; Tortonese & A.M. Clark, 1956: 343; Halpern, 1970b: 79; A.M. Clark & Courtman-Stock, 1976: 249; Clark & Downey, 1992: 265; H.E.S. Clark & McKnight, 2001: 133.

Diagnosis

Body pentagonal. Abactinal plates weakly tabulate, covered by evenly distributed granules. Marginal plates few, tumid with swollen or enlarged penultimates. Pedicellariae spatulate. Modified from Clark & Downey (1992).

Comments

The difficult distinction between Sphaeriodiscus and Peltaster has been outlined elsewhere (e.g. Mah 2011, 2018) with difficulties lying in the variable diagnostic character, the enlarged penultimate marginal plates.