Apocladophyllia guigouensis, Vasseur & Lathuilière, 2021

Vasseur, Raphaël & Lathuilière, Bernard, 2021, Pliensbachian corals from the Western Tethys, Geodiversitas 43 (22), pp. 1187-1291 : 1199

Apocladophyllia guigouensis n. sp.

( Fig. 7 )

urn:lsid:zoobank.org:act:71E2FE19-B178-4A5A-A46A-7E2BFB42808B

Apocladophyllia sp. 1 – Vasseur 2018: 122-123, fig. 3.7.

TYPE MATERIAL. — Holotype: CPUN MA0704E5-4; paratype: CPUN MA0904E10. STUDIED SAMPLES. — Two specimens: CPUN MA0704E5-4, CPUN MA0904E10.

ETYMOLOGY. — Refers to the geographic origin of the type material, the Guigou Plateau.

TYPE HORIZON. — Pliensbachian . TYPE LOCALITY. — Guigou Plateau, 33°27’9”N, 4°55’21”W, Middle Atlas of Morocco. GEOGRAPHIC AND STRATIGRAPHIC RANGES. — Pliensbachian of Koudiat Ech Chehem ( Middle Atlas of Morocco).

DESCRIPTION

Phaceloid colony with subcircular calices multiplying by dichotomous division. Corallites sometimes connected by apophyses typical for the genus (seeMorycowa & Roniewicz 1990). Radial elements are compact septa, free or joined to the columella by their inner edges, with sharp granules on the lateral faces. A small styliform columella is sometimes present. Wall probably septothecal. A wrinkled epitheca s.l. covers the external parts of the corallites.

Calicular diameter: 2 to 3.3mm –Distance between calices: 2.1 to 7mm –Number of septa:28to 31–Septal density:5per 1mm.

SIMILARITIES AND DIFFERENCES

The colony is not submassive as in A. nowaki and shows less apophyses. The calicular diameters and number of septa are higher than in A. koniakensis .

Figures

FIG. 7. — Apocladophyllia guigouensis n. sp.:A, lateral view of the specimen CPUN MA0704E5-4;B, transverse polished section of the specimen CPUN MA0704E5-4; C, detail in lateral view of apophyses in the specimen CPUN MA0704E5-4; D, transverse thin section of the specimen CPUN MA0704E5-4; E, transverse thin section of the specimen CPUN MA0704E5-4. Scale bars: A, 2 cm; B, 4 mm; C, D, 1 cm; E, 2 mm.