92 
HOLY CROSS 
MTS 
Kamienna 
Fig. 1 Location of Balté6w. A, map of the Holy Cross Mountains with the 
Upper Jurassic outcrop stippled (based on Roniewicz & Roniewicz, 
1971). B, map of the Baltéw area with the outcrop of the coralliferous 
limestone complex containing the bryozoan fauna stippled (based on 
Liszkowski, 1976). 
Zone (J. Gutowski pers comm. to U.H., 1991). Therefore, the 
bryozoans belong to either the Transversarium or Bifurcatus Zone of 
the Middle Upper Oxfordian in the Submediterranean ammonite 
zonal scheme (Cariou et al., 1971; Gutowski, 1992). 
SYSTEMATIC DESCRIPTIONS 
Order CYCLOSTOMATA Busk, 1852 
Suborder TUBULIPORINA Milne-Edwards, 1838 
Family ONCOUSOECIIDAE Canu, 1918 
Genus ONCOUSOECIA Canu, 1918 
TYPESPECIES. Tubulipora lobulata Hincks, 1880 (=Alecto dilatans 
Johnston, 1847; see Hayward & Ryland, 1985), Recent. 
U. HARA AND P.D. TAYLOR 
nies composed of narrow ramifying branches in which the zooids are 
arranged multiserially. Gonozooids are small to moderately large, 
and ovoidal or pyriform in shape. They are not pierced by autozooidal 
REMARKS. Species assigned to Oncousoecia have encrusting colo- | 
apertures. 
Oncousoecia sp. Figs 2-3 9 
MATERIAL. MUZ PIG 1601/11/8. / 
DESCRIPTION. Single colony comprising two coalescing branches 
detached from their original substrate. } 
Autozooids have frontal walls about 0.90-1.00 mm long by 0.25—_ 
0.35 mm wide, slightly convex distally but more immersed 
proximally. Apertures circular, about 0.11—0.15 mm in diameter, 
with short preserved peristomes tapering markedly distally. 
Pseudopores large, closely-spaced, often distally pointed. Faint 
transverse wrinkles on autozooid frontal walls continuous across 
colony surface. 
Two gonozooids present, both asymmetrical as a result of distor- 
tion following branch coalescense (Fig. 2). Proximal frontal wall 
long and indistinguishable from that of an autozooid, raised strongly 
at its well-marked boundary with the dilated distal part of the frontal © 
wall. Distal frontal wall roughly pyriform in outline, 1.10 mm long 
by 1.00 mm wide, slightly inflated in height, relatively smooth- 
surfaced and possessing a higher density of pseudopores than the 
autozooids. Ooeciopore subterminal (i.e. within the area of the 
dilated frontal wall), transversely elliptical, 0.07 mm long by 0.15_ I 
mm wide, about the same size as an autozooidal aperture. 
Ooeciostome short, slightly reflexed, bearing very few pseudopores _ 
(Fig. 3). i 
eh ee 
REMARKS. Walter (1970), in his major revision of Jurassic j¥, 
cyclostomes, described five species of Oncousoecia. The species | \ 
from Balt6w most closely resembles O. elegantula (d’Orbigny, i 
1850) from the Upper Bajocian of Port-en-Bessin, Normandy, France. I 
However, O. elegantula has slightly narrower autozooids, a differ- t 
ence which might be significant given that frontal wall width is one ~ a 
of the more useful morphometric characters for distinguishing )" 
between species of Jurassic cyclostomes. In view of the sparse — 
material available from Baltow and the need for SEM study of the” 
type specimens of O. elegantula and other Jurassic species of 
Oncousoecia, specific determination of the Baltow specimen is” 
deferred. ' 
Family MULTISPARSIDAE Bassler, 1935 
(= MACROECIIDAE Canu, 1918) 
Genus REPTOMULTISPARSA @ Orbigny, 1853 
TYPESPECIES. Diastopora incrustans d’ Orbigny, 1850, Bathonian. 
REMARKS. Nomenclatural problems concerning the type spec-’ 
ies of Reptomultisparsa, misidentified when selected by Gregory 
(1896b), were discussed by Taylor (1984) and resolved by ICZN) 
Opinion 1392 (1986) which designated Diastopora incrustans) 
d’Orbigny as the valid type species. An earlier concept of 
Reptomultisparsa encompassing almost all multilamellar tubuli-j 
porine species has now been superseded by a concept based on the) 
morphology of the gonozooids, which are longitudinally elongate 
and have large subterminal ooeciopores (see Taylor and Sequeiros 
1982). Some, but not all species of Reptomultisparsa are 
multilamellar. 
