Parasmittina OSBORN, 1952

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

Genus Parasmittina OSBORN, 1952

Colony erect or encrusting. Autozooecia with marginal pores only. Aperture circular with lyrula and condyles. Oral spines may be present. Avicularia adventitious and interzooidal, medial. Ovicell immersed, with frontal pores.

150

Parasmittina cf. reticulata ( MACGILLIVRAY, 1842) Pl. 100, Fig. 1-4

v. * 1847 Cellepora trigonostoma m. – Reuss p. 87, Pl. 10, Fig. 20 v.? 1974 Smittina reticulata ( MACGILLIVRAY, 1842) – David and

Pouyet p. 191, Pl. 7, Fig. 7

T y p e: Holotype from Eisenstadt is deposited in the Natural History Museum Vienna under the number 1867.40.262 ( David and Pouyet, 1974).

M a t e r i a l: Altogether 3 colonies were studied from different sections.

D i a g n o s i s: Colony erect, bilaminar. Autozooecia elongate with large marginal areolar pores and sometimes also visible lateral walls. Apertures oval to circular with a large lyrula and a short peristome. Avicularia frontal, small always tapering proximally. No ovicells recognized.

R e m a r k s: The specimens are very similar to Cellepora trigonostoma REUSS, 1847 (and Smittina reticulata ( MACGILLIVRAY, 1842) – which were synonymised by David and Pouyet (1974) – with respect to the shape of the autozooecia, the presence of a lyrula and the position and size of the avicularia. Because no ovicell has been found, the exact determination of the specimens remains uncertain.