Reteporella sp.

ZÁGORŠEK, KAMIL, 2010, BRYOZOA FROM THE LANGHIAN (MIOCENE) OF THE CZECH REPUBLIC PART II: SYSTEMATIC DESCRIPTION OF THE SUBORDER ASCOPHORA LEVINSEN, 1909 AND PALEOECOLOGICAL RECONSTRUCTION OF THE STUDIED PALEOENVIRONMENT, Acta Musei Nationalis Pragae Series B 66 (3 - 4), pp. 139-255 : 139-255

Reteporella sp.

Pl. 135, Fig. 1-6

v. 1977 1925

1988

2006 Sertella sp. – Vávra p. 145 (cum syn.)

Sertella gigantea nov. spec. – Kühn p. 26, Pl. 2, Fig. 3, 4, Text fig 6

Sertella cellulosa LINNAEUS, 1767 – Moissette p. 167 (cum syn.)

Reteporella sp. – Berning p. 128

M a t e r i a l: More than 100 specimens from almost all studied sections. Kühn’s material is stored in the collections of the Geological Bundesanstalt (Vienna, Austria) number. 2007/208/4 ).

D i a g n o s i s: Colony robust, reticulating, branches wide, fenestrulae long and narrow. Autozooecia in four to six longitudinal rows. Frontal wall smooth with scattered large, areolar pores. Aperture circular, hidden in a short peristome. Basal pseudo-spiramen forming a short open sinus. Suboral avicularia rare, immersed into the proximal margin of the autozooecia. Frontal avicularia rare, small, oval with pivotal bar. Ovicell immersed with a wide frontal fissure. Dorsal side with small avicularia usually situated on the margin of the branch. No large avicularia at bifurcation of branches.

R e m a r k s: The usually poor preservation and absence of characteristic features do not allow precise determination of many colonies of Reteporella . A few authors refer these material to Reteporella cellulosa LINNAEUS, 1767 or Sertella cellulosa LINNAEUS, 1767 (e.g. Moissette, 1988), but this species is not well established ( Harmer, 1933 and Gordon, 1989). Here I follow the opinion of Vávra (1977) and Berning (2006), who prefer to summarize all such material as Reteporella sp.

Kühn’s material is very badly preserved, the only visible feature are the larger branches of the colony. Detailed study of the type material does not allow definition of any characteristic feature, so this species has to be included within Reteporella sp. only.