Clypeina ( Michelin, 1845 ) Bassoullet et al., 1978

Bucur, Ioan I., Granier, Bruno & Krajewski, Marcin, 2014, Calcareous Algae, Microbial Structures And Microproblematica From Upper Jurassic-Lowermost Cretaceous Limestones Of Southern Crimea, Acta Palaeontologica Romaniae 10 (1 - 2), pp. 1-2 : 65-67

Genus Clypeina ( Michelin, 1845) Bassoullet et al., 1978 Clypeina sulcata ( Alth, 1881)

Campbelliella striata and Clypeina sulcata (formerly C. jurassica ) are common in reef-dominated Upper Jurassic limestones of the Tethyan realm. In a detailed study of Campbelliella, De Castro (1993) emended the genus as well as its two species: C. milesi Radoičić, 1959 , and C. striata ( Carozzi, 1954) . Although details of the thallus morphology are not always revealed, the specimens investigated from the Ay-Petri massif are most likely Campbelliella striata . Clypeina sulcata is normally easy to identify; nevertheless, currently it can be confused with the recently described Clypeina langustensis ( Sokač et al., 2014) . In the Ay-Petri massif, we have also identified rare Clypeina sulcata specimens.

? Clypeina sp.

Fig. 14 d

? Clypeina / Actinoporella sp.

Fig. 14 e, i

A single specimen that can be assigned to the genus Clypeina ( Fig. 14 d ) was found in Tithonian limestones of the Ay-Petri massif. Another specimen of a “clypeiniform” dasyclad ( Fig. 14 e, i ), represented by oblique or tangential sections of verticils, could belong either to Clypeina or Actinoporella .

Figures

Fig. 14 Calcareous algae (Dasycladales, Thaumatoporellales) and Microproblematica from the Yalta-Ay Petri area, southern Crimea. a?Otternstella sp. in oblique-tangential section; sample KO-3a. b, f?Humiella sp. longitudinal section (b) and transverse section (f) through laterals; sample KA-8. c, g, h Neogyroporella? gawlicki Schlagintweit in oblique (c), transverse (g), and transverse-oblique section; c, sample KJ-5a; g, sample KB-44a; h, sample KO-3a. d?Clypeina sp. in longitudinal-oblique section; sample KE-4e. e, i Clypeina/Actinoporella sp. in oblique (e) and tangential (i) sections; e, sample KB-6b; i, sample KB-14. j, k Reproductive cysts inside laterals of a triploporellacean alga; sample KC-16; k, enlargements of j. l, n Coptocampylodon-like fragments; possibly lateral fragments of Selliporella cf. neocomiensis; sample KB-13. m, Terquemella sp. (reproductive structures from a large triploporellacean alga); sample KC-33. o, p Thaumatoporella parvovesiculifera (Raineri); o, sample KB-7a; p, sample KB-7b. Scale bar: 0.25 mm (a ton, p; 0.5 mm (o).