Entomozocopina, Grundel, 1969

Perrier, Vincent, 2012, An atypical Silurian myodocope ostracod from the Armorican Massif, France, Acta Palaeontologica Polonica 57 (2), pp. 363-373 : 365

Suborder Entomozocopina ? Gründel, 1969 Superfamily Entomozoacea ? Přibyl, 1950

Emended diagnosis.—Valves generally thin, weakly calcified, adults usually> 1 mm long, characteristically ornamented with longitudinal, concentric or spiral ribs. Lacking a rostrum and rostral incisure. Adductorial sulcus well developed to absent (modified after Gooday 1983).

Remarks.—Herein the term “ Entomozoacea ” is used in its widespread sense (see Gooday 1983), even though the type species of the type genus of the “ Entomozoidae ”, namely Entomozoe tuberosa ( Jones, 1861) from the Silurian of Scotland, is known to be an entirely different form of ostracod (assigned to the myodocope superfamily Bolbozoacea Bouček, 1936 ; see Groos−Uffenorde and Schindler 1990; Siveter and Vannier 1990; Perrier et al. 2007 for discussion and recommendations).

Sineruga lacks the typical external ribbed ornament characteristic of the entomozoaceans. However, other external morphology (valve shape, dorsal connection, sulcus, and muscle spot) of Sineruga insolita gen. et sp. nov. is very similar to that of the Silurian Entomozoidae Richteria migrans Barrande, 1872 (see Perrier et al. 2007) or the Devonian Rhomboentomozoidae Franklinella lysogorensis Olempska, 2002 . The major difference between these two families is the overall valve outline, which is elongated to bean−shaped in the Entomozoidae , and triangular to sub−quadrate in Rhomboentomozoidae (see Gooday 1983). Because Sineruga displays an elongated bean−shape carapace it is tentatively placed here within the Entomozoidae .

The classification used for the higher taxa of Ostracoda is that of Horne et al. (2002).