Rhynchozoon 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

Rhynchozoon sp.

Pl. 142, Fig. 1-6

M a t e r i a l: Altogether only two specimens were found.

D i a g n o s i s: Autozooecia oval indistinct, with a flat, smooth frontal wall not separated by grooves. Marginal areolar pores small, 3-5 on the border of each autozooecium. Apertures semilunar with a very wide sinus and with a prominent denticulate distal margin, but with denticles also on the proximal margin. Condyles prominent. Peristomes short. Suboral avicularia small, drop-like without a pivotal bar. Oral spines not observed. Large adventitious avicularia present, situated on the frontal wall with a prominent pivotal bar. Ovicell not observed.

R e m a r k s: Differs from other Rhynchozoon species in having very large apertures, distally distinctly denticulate, an indistinct shape of the autozooecia and the presence of large adventitious avicularia. Only two specimens have been found, neither of which had ovicells developed; therefore the features observed were not sufficient to establish a new species .