Pauxillites, Valent & Corbacho, 2015

Valent, Martin & Corbacho, Joan, 2015, Pauxillites Thaddei A New Lower Ordovician Hyolith From Morocco, Acta Musei Nationalis Pragae Series B 71 (1 - 2), pp. 51-54 : 52

Genus: Pauxillites MAREK, 1966

T y p e s p e c i e s: Hyolithus pauxillus NOVÁK, 1891, Middle Ordovician, Darriwilian, Šárka Formation, Barrandian area, Bohemia, the Czech Republic.

D i a g n o s i s. “Shell slightly dorso-ventrally bent; subtrigonal in cross section. Lateral edges sharp. Apertural angle less than 90°, shelf long. Dorsal sculpture consisting of fine longitudinal costae; ventral side marked with growth lines.

Operculum with three pairs of clavicles. Short flattened cardinal processes joined in their basal parts. Cardinal teeth present. One pair of sickle-shaped adductor muscle scars. Surface of operculum with very fine concentric growth lines” ( Marek 1966).

O c c u r r e n c e. Ordovician, Floian – Darriwilian

(Arenig – Llanvirn), West Gondwana realm.

S p e c i e s. Bohemia: Šárka Formation – Pauxillites pauxillus pauxillus (NOVÁK, 1891) and Dobrotivá Formation – Pauxillites latus (ZÁZVORKA, 1928); Morocco: Tachilla Formation – Pauxillites pauxillus meridionalis MAREK, 1983 and Upper Fezouata Formation – Pauxillites sp. n. in Marek (1983) and Pauxillites thaddei sp. nov.