Trocharea sp. 2

Vasseur, Raphaël & Lathuilière, Bernard, 2021, Pliensbachian corals from the Western Tethys, Geodiversitas 43 (22), pp. 1187-1291 : 1207

Trocharea sp. 2

( Fig. 12 )

Trocharea sp. 3 – Vasseur 2018: 361-362, fig. 3.103.

STUDIED SAMPLE. — CPUN CDAm10. GEOGRAPHIC AND STRATIGRAPHIC RANGES. — Pliensbachian of Amellagou ( High Atlas of Morocco).

DESCRIPTION

Subcylindrical solitary coral, subcircular and slightly bilobate in outline. Septa pennular, perforate, straight, free or joined with discontinuous meniana on lateral faces. Distal edge ornamented with small regular trabecular teeth. Axial zone with a restricted fossa and maybe trabecular projections of septa in depth. The corallum is wrapped into an epitheca s.l. of unknown nature. Endotheca made of rare dissepiments. Synapticulae present. No bilateral nor hexameral symmetry observed.

Calicular diameter: 12 mm – Number of septa: approximately 96 – Septal density: 8 per 2 mm.

SIMILARITIES AND DIFFERENCES

Trocharea sp. 2 differs from T. cupuloides Fischer, 1969 and T. sp. 1 by its smaller dimensions and its higher septal density.

Figures

FIG. 12. — Trocharea sp. 2: A, lateral view of the specimen CPUN CDAm10; B, lateral view of the specimen CPUN CDAm10; C, transverse thin section of the specimen CPUN CDAm10. Scale bars: A, B, 5 mm; C, 4 mm.