Tubulosmilia regularis, Vasseur & Lathuilière, 2021

Vasseur, Raphaël & Lathuilière, Bernard, 2021, Pliensbachian corals from the Western Tethys, Geodiversitas 43 (22), pp. 1187-1291 : 1270-1274

Tubulosmilia regularis n. gen., n. sp.

( Fig. 59 )

urn:lsid:zoobank.org:act:62B61ED0-2B66-41C5-9A9E-0C5EC86FA2D0

Nov. gen. 5 sp. 1 – Vasseur 2018: 273-274, fig. 3.68.

TYPE MATERIAL. — Holotype CPUN 2303 A5-3. STUDIED SAMPLE. — CPUN 2303 A5-3.

ETYMOLOGY. — The species name refers to the regularity of the septal apparatus and to the fact that this species represents the genus in its features.

TYPE HORIZON. — Pliensbachian . TYPE LOCALITY. — Amellagou , 31°57’29”N, 5°2’20”W, Morocco. GEOGRAPHIC AND STRATIGRAPHIC RANGES. — Pliensbachian of Amellagou ( High Atlas of Morocco).

DESCRIPTION

Phaceloid corallum with cylindrical corallites that seems to reproduce by extracalicular budding. Radial elements are free or joined, often wavy septa of fluctuating width with inner edge generally swollen. In most of the calices, the first cycles of septa are so enlarged that they link together into a ring that more or less completely encloses the lumen and separate it from the interseptal chambers. There are at least 3 distinct size orders of septa in the septal apparatus. Endotheca made of tabular dissepiments and wall probably parathecal. An epitheca s.l. wraps the corallites.

Calicular diameter: 3.3 to 7.3 mm – Distance between calices: 7 to 13 mm – Number of septa: approximately 60 to 70 – Septal density: 8 per 2 mm.

Figures

FIG. 59. — Tubulosmilia regularis n. gen., n. sp.: A, transverse polished section of the specimen CPUN 2303A5-3; B, transverse thin section of one calice of the specimen CPUN 2303A5-3; C, detail in transverse polished section of two calices of the specimen CPUN 2303A5-3; D, longitudinal thin section of one calice of the specimen CPUN 2303A5-3; E, transverse thin section of the specimen CPUN 2303A5-3. Scale bars: A, E, 4 mm; B, D, 2 mm; C, 5 mm.