Alloiteausmilia boudaharensis Beauvais, 1986

Vasseur, Raphaël & Lathuilière, Bernard, 2021, Pliensbachian corals from the Western Tethys, Geodiversitas 43 (22), pp. 1187-1291 : 1196

Alloiteausmilia boudaharensis Beauvais, 1986

( Fig. 3 )

Alloiteausmilia boudaharensis Beauvais, 1986: 16 , pl. 3, fig. 3 and text-fig. 8-9. — Vasseur 2018: 114-115, fig. 3.4.

TYPE MATERIAL. — Holotype MNHN.F.R11603. TYPE HORIZON. — Pliensbachian. TYPE LOCALITY. — Beni Tadjit, Morocco. STUDIED SAMPLES. — Two specimens: holotype MNHN.F.R11603; CPUN DA2905E1’-1. GEOGRAPHIC AND STRATIGRAPHIC RANGES. — Pliensbachian of High Atlas in Morocco ( Dades Valley , Beni Tadjit ).

DESCRIPTION

Solitary coral with circular to elliptical calice. Radial elements are septa generally flexuous, free or joined by their inner edge, compact, commonly with a rhopaloid inner edge when free. Lateral faces seem sometimes smooth, sometimes irregularly granulated and septa appear to grow by successive deposits of stereome layers providing a lamellar aspect in transverse section as for the genus Archaeosmilia Melnikova, 1975 . No columella nor synapticulae.Endotheca made of large vesicular dissepiments in continuity with septal thickening. The curved septa and fossa elongation seem to define a bilateral symmetry. An epitheca s.l of undefined nature enwraps the corallite. Calicular diameter: approximately 45 mm – Number of septa: 41 to 68 (this last value according toBeauvais 1986)– Septal density: 3 to 5 for 5 mm.

Figures

FIG. 3. — Alloiteausmilia boudaharensisBeauvais,1986: A, distal view of the holotype MNHN.F.R11603; B, transverse section in the specimen CPUN DA2905E1’-1; C, partially polished lateral view of holotype MNHN.F.R11603; D, detail in distal view of the holotype MNHN.F.R11603 showing the link between endotheca and septa; E, longitudinal section of the holotype MNHN.F.R11603. Scale bars: A, C, E, 1 cm; B, D, 5 mm.