Terebratulina d’Orbigny, 1847

Bitner, Maria Aleksandra, Lozouet, Pierre & Cahuzac, Bruno, 2013, Upper Oligocene (Chattian) brachiopod fauna from the Aquitaine Basin, southwestern France and its paleoenvironmental implications, Geodiversitas 35 (3), pp. 579-606 : 584-586

Genus Terebratulina d’Orbigny, 1847

TYPE SPECIES. — Anomia retusa Linnaeus, 1758 , by subsequent designation of Brunton et al. (1967: 176).

Terebratulina retusa ( Linnaeus, 1758) ( Fig. 2 E-H; Table 2)

Anomia retusa Linnaeus, 1758: 701 , no. 191. Terebratulina retusa – Logan 1979: 37-43, text-fig. 8, pl. 3, figs 1-18. — Gaetani & Saccà 1985: 15-16, pl. 7, figs 5-10; pl. 9, figs 6-9. — Taddei Ruggiero 1985: 367-369, pl. 2, figs 1-7, pl. 3, figs 1-8, pl. 4, figs 1-7; 1994: 208, pl. 2, figs 1-3. — Bitner & Moissette 2003: 472, fig. 6A-F. — Bitner & Dulai 2004: pl. 3, fig. 1. — Álvarez & Emig 2005: 139, 140, figs 24D-F, 27D, 27F, 28, 53B, 54E-F, 61.

MATERIAL EXAMINED. — Peyrère: 74 complete specimens, 11 ventral and 15 dorsal valves, and many fragments MNHN.F. A46485 -A46488 and A46555. — Bélus: five complete specimens, two ventral and one dorsal valves MNHN.F.A46489. — St-Étienne-d’Orthe: one ventral valve MNHN.F.A46490.

OCCURRENCE. — fflis species is well known in the Neogene deposits of the Mediterranean province but rare in the Central Paratethys ( Dreger 1889; Bitner & Dulai 2004), and it is present in the Aquitaine Middle Miocene ( Bitner & Cahuzac 2004). Today it occurs in the north-eastern North Atlantic and the Mediterranean Sea ( Logan 1979; Brunton & Curry 1979; Curry 1982). Its depth range is from 18 to 2157 m ( Logan 2007).

REMARKS fflis species has been found in three localities but only in one, Peyrère, it is numerous. ffle investigated specimens, although often crushed and/ or damaged, are consistent with those hitherto described having, however, smaller size ( Logan 1979; Taddei Ruggiero 1985; Gaetani & Saccà 1985; Álvarez & Emig 2005). ffle shell is ovate to subpentagonal, biconvex, covered with numerous, fine ribs that are coarser and strongly beaded in young individuals ( Fig. 2E ). ffle cardinalia are typical for the genus with prominent inner socket ridges and deep dental sockets. ffle loop is preserved only in a young specimen, with crural processes not yet united ( Fig. 2F ).

Figures

FIG. 2. — A-D, Novocrania anomala (Müller, 1776), Upper Oligocene; A, B, outer and inner views of ventral valve, Peyrère, MNHN. F.A46481; C, D, inner views of dorsal valves, Abesse, MNHN.F.A46483 and MNHN.F.A46484; E-H, Terebratulina retusa (Linnaeus, 1758),Upper Oligocene, Peyrère; E, dorsal view of young complete specimen, MNHN.F.A46485; F, inner view of dorsal valve to show a brachial skeleton, young individual, SEM, MNHN.F.A46486; G, H, dorsal and lateral views of complete specimen, MNHN.F.A46487. Scale bars: A-D, 2 mm; F, 500 µm; G, H, 5 mm.