SPINOLAXINA Conil and Naum, 1977

 

 

Type species: Plectogyra pauli Conil and Lys, 1964 (*661), p. 203; OD.

Laxoseptabrunsiina (Spinolaxina) Conil and Naum, 1977 (*668), p. 121.

Laxoseptabrunsiina (Spinolaxina) Conil, in Bless et al., 1976 (*254), pl. 9, fig. 21, 22 (name not available, ICZN Art. 13 (a)(i), no description).

Test streptospirally coiled in the early stage, later becoming nearly planispiral, spire enlarging rapidly with growth; wall calcareous,microgranular, thin, and may show a tend­ency to differentiation, with supplementary deposits in the form of basal projections; aperture basal. L. Carboniferous (Visean); Belgium; Germany; USSR: Urals.