Coryphyllia capillaria, Vasseur & Lathuilière, 2021

Vasseur, Raphaël & Lathuilière, Bernard, 2021, Pliensbachian corals from the Western Tethys, Geodiversitas 43 (22), pp. 1187-1291 : 1211-1214

Coryphyllia capillaria n. sp.

( Fig. 15 )

urn:lsid:zoobank.org:act:F1891D54-805C-4A00-BCCE-C7585E5119CA

Coryphyllia sp. 1 – Vasseur 2018: 152-153, fig. 3.19.

TYPE MATERIAL. — Holotype: CPUN PFPyr7-2; paratypes: CPUN 2303 A1-2, CPUN 2303 A8-1, CPUN AM16183-4, CPUN CDAm7, CPUN MA0504E7-13, CPUN MA0504E7-17, CPUN MA0704E3-10, CPUN MA0704E3-12. STUDIED SAMPLES. — Nine specimens: CPUN 2303 A1-2, CPUN 2303 A8-1, CPUN AM16183-4, CPUN CDAm7, CPUN MA0504E7-13, CPUN MA0504E7-17, CPUN MA0704E3-10, CPUN MA0704E3-12, CPUN PFPyr7-2.

ETYMOLOGY. — Refers to the very thin and long septa of high orders.

TYPE HORIZON. — Pliensbachian . TYPE LOCALITY. — Estivère pass, French Pyrenees. GEOGRAPHIC AND STRATIGRAPHIC RANGES. — Pliensbachian from France and Middle and High Atlas of Morocco.

DESCRIPTION

Solitary coral cylindrical to conical, circular to slightly elliptical in outline. Radial elements are straight or curved, free, compact, costosepta with first cycle septa often bicuneiform with rhopaloid inner edge that alternate with septa of higher cycles that can be very thin. The septal apparatus is organized in 3 or 4 distinct size orders, sometimes difficult to distinguish.Lateral faces are smooth or finely granulated and there are some vestiges of a wavy mid-septal line. Endotheca made of numerous vesicular dissepiments distributed in all the interseptal space on which some lonsdaleoid septa can appear. No columella but a constricted, elongated fossa that defines a bilateral symmetry superimposed to the radial arrangement. An often eroded epicostal epitheca s.l. covers the external parts of the corallum. Calicular diameter: 20 to 53 mm – Number of septa: 110 to 140 – Septal density: 6 to 12 per 5 mm.

SIMILARITIES AND DIFFERENCES

Differs from Coryphyllia regularis by higher values of septal densities and number of septa and also by a septal apparatus made of less bicuneiform septa in which it is more difficult to distinguish the different size orders of septa.

Figures

FIG. 15. — Coryphyllia capillaria n. sp.: A, distal view of the specimen CPUN MA0504E7-13; B, transverse thin section of the specimen CPUN CDAm7; C, transverse polished section of the specimen CPUN 2303A1-2; D, detail in transverse thin section of the septal apparatus of the specimen CPUN PFPyr7-2; E, longitudinal polished section of the specimen CPUN 2303A1-2; F, transverse thin section of the specimen CPUN PFPyr7-2. Scale bars: A, 1 cm; B, C, F, 4 mm; D, 2 mm; E, 1 mm.