Trocharea sp. 1

Vasseur, Raphaël & Lathuilière, Bernard, 2021, Pliensbachian corals from the Western Tethys, Geodiversitas 43 (22), pp. 1187-1291 : 1206-1207

Trocharea sp. 1

( Fig. 11 )

Trocharea sp. 2 – Vasseur 2018: 359-360, fig. 3.102.

STUDIED SAMPLES. — Two specimens: CPUN AM16160-6, CPUN AM16178-5. GEOGRAPHIC AND STRATIGRAPHIC RANGES. — Pliensbachian of Amellagou ( High Atlas of Morocco).

DESCRIPTION

Solitary fungiform coral, circular in outline, fixed to its substratum by a lower face reduced in diameter forming a peduncle. Septa pennular, perforate, straight, free or joined with discontinuous meniana on lateral faces. Distal edge ornamented with small regular teeth. Axial zone with a restricted fossa and probably trabecular projections of septa in depth. The lower face of the corallum is covered by an epitheca s.l. of unknown nature. Endotheca made of rare dissepiments in depth. Synapticulae abundant. No bilateral nor hexameral symmetry observed.

Calicular diameter: 20.1 mm – Septal density: 14 to 15 par 5 mm – Number of septa (extrapolated from ¼): 160.

SIMILARITIES AND DIFFERENCES

Differs from Trocharea cupuloides Fischer, 1969 by its fungiform, pedunculate shape.

Figures

FIG. 11. — Trocharea sp. 1: A, distal view of the specimen CPUN AM16160-6 before cutting;B, lateral view of the specimen CPUN AM16160-6; C, detail in transverse section of the septal apparatus of the specimen CPUN AM16160-6; D, detail in distal-peripheric view of pennular septal organisation of the specimen CPUN AM16160-6;E, axial longitudinal section in sample CPUN AM16160-6 (skeleton corresponds to light parts).Scale bars:A, 5 mm; B, E, 4 mm; C, 2 mm; D, 0.5 mm.