Stylophyllopsis bovista, Vasseur & Lathuilière, 2021

Vasseur, Raphaël & Lathuilière, Bernard, 2021, Pliensbachian corals from the Western Tethys, Geodiversitas 43 (22), pp. 1187-1291 : 1266-1267

Stylophyllopsis bovista n. sp.

( Fig. 54 )

urn:lsid:zoobank.org:act:E549905B-386B-450D-8A0E-DF06722AB4A6

Stylophyllopsis sp. 1 – Vasseur 2018: 328-329, fig. 3.89.

TYPE MATERIAL. — Holotype: CPUN PFPyr6-7; paratypes: CPUN PFPyr 6-8, PFPyr 6-9, PFPyr 6-10, PFPyr 6-11, PFPyr 6-16. STUDIED SAMPLES. — Six specimens: CPUN PFPyr 6-7, PFPyr 6-8, PFPyr 6-9, PFPyr 6-10, PFPyr 6-11, PFPyr 6-16. ETYMOLOGY. — The species name refers to the similarity of shape with most of the mushrooms of the genus Bovista. TYPE HORIZON. — Pliensbachian . TYPE LOCALITY. — Estivère pass and surrounding areas ( Pyrenees , France). GEOGRAPHIC AND STRATIGRAPHIC RANGES. — Pliensbachian of the Estivère pass and surrounding areas ( Pyrenees , France).

DESCRIPTION

Solitary, discoid to fungiform corallum (the diameter exceed the height of the corallum) showing a circular adhesion scar on its lower face. Radial elements are subcompact, straight, free costosepta with stylophyllid septal structure that produce periodical fluctuations in width of septa in transverse section and sometimes project in the axial space at the inner edge. Endotheca made of rare peripheral dissepiments. No synapticulae observed. A concentrically wrinkled epitheca s.l. covers the external part of the corallum.

Calicular diameter: 20 to 33 mm – Number of septa: 60 to 70 – Septal density: 4 to 5 per 5 mm.

SIMILARITIES AND DIFFERENCES

This species differs from the other Triassic and Liassic ones of the genus by its ratio between number of septa and diameter and/or by its very specific shape, wider than high.

Figures

FIG. 54. — Stylophyllopsis bovista n. sp.: A, distal view of the specimen CPUN PFPyr6-7; B, lateral view of the specimen CPUN PFPyr6-7; C, proximal view of the specimen CPUN PFPyr6-7; D, transverse proximal polished section of the specimen CPUN PFPyr6-8; E, transverse distal polished section of the specimen CPUN PFPyr6-8 (detail of septal structure); F, transverse polished section of the specimen CPUN PFPyr6-10; G, transverse polished section of the specimen CPUN PFPyr6-11 (detail of septal structure). Scale bars: A, B, C, 1 cm; D, E, F, 5 mm; G, 2 mm.