Buffonellaria holubicensis, ZÁGORŠEK, 2010

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

Buffonellaria holubicensis sp. n.

Pl. 125, Fig. 1-6

D i a g n o s i s: Colony erect, bilaminar. Autozooecia with marginal areolar pores. Primary orifice with a narrow sinus. Small suboral avicularia are immersed inside the peristomes, large adventitious avicularia have a very long rostrum-palate. Ovicell deeply immersed, with a slightly ribbed endoecium, longer than wide. Secondary frontal hypercalcification often developed peristome above the aperture, but adventitious avicularia clearly visible.

H o l o t y p e: The specimen illustrated on Pl. 125, Fig. 5-6, from the locality Holubice, deposited in the National Museum Prague under numbers PM2 – P 01469.

P a r a t y p e s: 3 specimens from Holubice and Podbřežice deposited in the National Museum Prague under numbers PM2 – P 01466 to P 01468

A d d i t i o n a l m a t e r i a l: 18 specimens, mainly from the section at Holubice

D e r i v a t i o n o m i n i s: Due to the occurrence in the section at Holubice.

L o c u s t y p i c u s: Holubice,sampleA/2.

S t r a t u m t y p i c u m: Langhian – Lower Badenian.

M e a s u r e m e n t s: (in micro meters = µm; x = = average):

length of autozooecia: 480-564; x = 524

width of autozooecia: 251-357; x = 308

length of autozooecial aperture: 98-112; x = 106

width of autozooecial aperture: 84-91; x = 87

length of ovicell: 89-130; x = 113

width of ovicell: 110-140; x = 124

length of oral avicularium: 185-217; x = 193

width of oral avicularium: 75-103; x = 87

length of adventitious avicularium: 198-291; x = 237

width of adventitious avicularium: 88-130; x = 110

D e s c r i p t i o n: Colony flattened, bilaminar, rising from an encrusting base. Autozooecia with chaotically arranged marginal areolar pores growing in an irregular growth pattern. Primary orifice with a narrow sinus. Secondary apertures oval to circular. Small suboral avicularia immersed, situated inside the peristome, large adventitious avicularia with very long rostrum-palate tapering proximo-laterally. Ovicell deeply immersed, with a slightly ribbed endoecium, much longer than wide. Secondary frontal hypercalcification does not change the shape of the adventitious avicularia, they are often clearly visible.

C o m p a r i s o n: Differs from Buffonellaria kuklinskii sp. n. in having a narrower sinus, a circular secondary aperture, clearly visible, large adventitious avicularia and

160 a deeper immersed ovicell with a longer than wide endoecium area.

O c c u r r e n c e: Podbřežice and Holubice.