Strotogyra Wells, 1937

Genus Strotogyra Wells, 1937 View in CoL

Type species. Rhipidogyra undulata Reuss, 1854 View in CoL , Santonian of Austria (Gosau Group) .

Diagnosis. Colonial, flabelloid. Budding intramural, linear, polystomodaeal, forming corallites arranged uniserially, contorted, free laterally. Corallite centers indistinct when positioned in linear series, subdistinct or distinct in areas where direction of series changes or at end of calicinal series. Septa exsert, numerous, compact, non ‒ dentate on upper margins, granulated laterally. Costae bifurcating, distinct to base. Columella lamellar, discontinuous, often attached to processes from inner edges of septa. Endothecal dissepiments vesicular and subhorizontal. Wall septothecal, parathecal in earlier stages. Parathecal stereozone occurs irregularly. Multi ‒ lamellar epitheca s.l. often present.

Remarks. Genus Strotogyra View in CoL was recently reevaluated and revised ( Baron-Szabo, 2014, p. 43, Pl. 42, Figs. 4–8 View Fig View Fig View Fig View Fig View Fig ; Pl. 43, Figs. 1–3 View Fig View Fig View Fig ).

Strotogyra copoyensis ( Frost & Langenheim, 1974)

Fig. 11C

*1974 Placosmilia copoyensis View in CoL n. sp.: Frost & Langenheim, p. 240 ‒ 242, Pl. 83, Figs. 1 ‒ 7 View Fig View Fig View Fig View Fig View Fig View Fig View Fig .

Dimensions. d (series, wall–wall): 2.5 ‒ 5 mm, up to 9 mm in areas of bifurcation; s (monocentric): up to around 40; s/mm: 6 ‒ 8/2.

Description. Flabelloid colony; corallites indistinct to subdistinct meandroid series; costosepta arranged in 3 ‒ 4 size orders, regularly alternating in length and thickness; S1 reach center of corallite series; multilamellar epitheca s.l. present.

Type locality of species. Middle Eocene of Mexico (San Juan Formation ) .

Distribution. Upper Maastrichtian and SelandianTanetian of Iran (Zagros Zone, southwestern Iran; this paper), Middle Eocene of Mexico (San Juan Formation).

New material. 2NG202 (14 ‒ 15) (Zagros Zone, Tarbur Formation, southwestern Iran); Qs80 (37), Qs95 (4 ‒ 6) (Zagros Zone, southwestern Iran); 2BN59 ‒ 1 (2, 4, 15, 24, 25, 30) 2BN59 ‒ 2 (10), BN ‒ 59 ‒ N16 (3), BN ‒ 59 ‒ N19 (4) (all Sistan Suture Zone, eastern Iran).

Remarks. In having corallites forming laterally free, uniserially calicinal series and a septothecal wall with developments of a parathecal stereozone, the specimens described from the Middle Eocene of Mexico by Frost and Langenheim (1974) rather correspond to the genus Strotogyra View in CoL . Terefore, its new combination is suggested.