Schizostomella CANU et BASSLER, 1927

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 Schizostomella CANU et BASSLER, 1927

Erect, bilaminar colony. Autozooecia with a sinus on the primary orifice. Frontal wall with marginal areolar pores only. Avicularia adventitious, located marginally on the frontal wall. No ovicells, but brooding gonozooecia present.

R e m a r k: Until now a sinus on the primary orifice has never been described in this genus. Schizostomella is usually placed in the Adeonidae , the genera in which there is no sinus on the primary orifice, but a frontal spiramen (according to Hayward and Ryland, 1999). Schizostomella grinzingensis ( David and Pouyet, 1974) has without any doubt a shallow sinus on the primary orifice, and no spiramen was described by previous authors nor observed in our material. I did not have the opportunity to study the type species material: Schizostoma crassa CANU, 1908 , deposit- ed in NHM Paris, so I cannot state, if this species also developed a sinus on its primary orifice. The classification at family level therefore remains uncertain.