Psammaster davidsoni ( de Loriol and Pellat 1874 )

Fau, Marine, Villier, Loïc, Ewin, Timothy A. M. & Gale, Andrew S., 2020, A revision of Ophidiaster davidsoni de Loriol and Pellat 1874 from the Tithonian of Boulogne (France) and its transfer from the Valvatacea to the new forcipulatacean genus Psammaster gen. nov., Fossil Record 23 (2), pp. 141-149 : 143

publication ID	https://doi.org/ 10.5194/fr-23-141-2020
DOI	https://doi.org/10.5281/zenodo.11617222
persistent identifier	https://treatment.plazi.org/id/F635B046-FF92-FF99-FF33-28B3FBF3A3A3
treatment provided by	Felipe
scientific name	Psammaster davidsoni ( de Loriol and Pellat 1874 )
status

Treatment

Psammaster davidsoni ( de Loriol and Pellat 1874) View in CoL

1870 Ophidiaster davidsoni, Wright , p. 230, nomen nudum by lack of definition, description, or indication.

1874 Ophidiaster davidsoni de Loriol and Pellat , p. 293, pl. XXVI, figs. 13–14.

1993 Ophidiaster? davidsoni, Lewis , p. 60.

Type material

NHMUK PI E 53996 , lectotype, and NHMUK PI E 1499 , paralectotype, from the GrŁs des Oies Formation , Tithonian of Ningle , south Boulogne-sur-Mer, Pas-de-Calais, France .

Diagnosis

Forcipulatacean asteroid with five parallel sided arms, rounded in cross section, and a small disc. Crossed shape ossicles, bearing numerous small acicular spines and a central granular spine of the same length. Arms with two rows of marginal, one carinal, one abactinal, and three rows of actinal ossicles on each side. Adambulacral rows comprised of alternating ossicles, one larger and one smaller, each bearing three to four spines.