Description

Dimensions See Fig. 4 A. Description Carapace large, preplete, ovoid / rectangular (adults) to inverted triangular (young juveniles) in lateral view, lenticular with laterally compressed anterior and posterior margins in dorsal view. Lmax slightly above mid-H, Hmax in front of mid-L, Wmax around mid-H and slightly in front of mid-L. RV overlaps LV all around, with maximum along free margin. Hinge line slightly sinuous with gentle concavity immediately posterior to ACA, slightly invaginated all along its length. Obtuse cardinal angles, ACA about 145 °, PCA about 130 °. Surface coarsely reticulate with round reticulae. LV with a spinose free margin that could indicate the presence of a velar structure. Pit relatively large (H about 32 % of Hmax, L about 14 % of Lmax), ovoid, elongated dorso-ventrally, located slightly in front of mid-L, slightly above mid-H, at Wmax.

Common Names

Taxonomic Hierarchy

Kingdom: Animalia

Phylum: Arthropoda

Class: Ostracoda

Order: Palaeocopida

Family: Primitiopsidae

Genus: Clavofabella

Species: Clavofabella lanshella Guillam, Forel, Song & Crasquin, 2022