Eocomoseris sp.

Eocomoseris sp.

Fig. 5 7–9 View Fig View Fig View Fig View Fig View Fig

Material FPJ 374; 2 thin sections.

Dimensions (FPJ 374)

Description Astreoid colony. Corallite over a large distance. Septa irregularly perforated. Microstructure of large trabeculae. Septa in cross section equal in thickness throughout the whole septum. Symmetry of septa irregular. Two irregular size orders can be distinguished, that differ in length, but not in thickness. Septa occasionally connected to each other in the centre of the corallite, and to the columella. Septal lateral face with pennulae. Pali absent. Some septa may be attached to the columella. Costae present, sub-confluent to non-confluent, and much more regularly perforated than septa. Synapticulae present and fairly common. Columella styliform and well marked. Te endotheca has thin tabulae and extended thin tabulae. Wall absent. Coenosteum extended, consists of costae. Budding extracalicinal.

Remarks Te problem of separating the numerous and mostly unnamed Eocomoseris species was already discussed in Löser et al. (2021). Only very few species are established but the genus is common in the Jurassic and Cretaceous. Because the corallite dimensions vary much within one colony (as well as being recognisable in the high values for the coefficient of variation for the corallite dimensions in the table above), it is difficult to limit well different species.