. Bulletin of the Natural Histort Museum. Geology series. 100 U. HARA AND TAYLOR. Fig. 28 Mecynoecia suprabajocina sp. nov., MUZ PIG 1601/11/9. Oxfordian, Baltow, Poland. Scanning electron micrograph of branch growing tip showing spoke-liice arrangement of zooecial walls, x 85. 1953 Apsendesia cristata Lamouroux; Bassler: 56, fig. 23,4. 71967 Apsendesia cristata Lamouroux; Walter: 46, pi. 10, figs 1- 2. 1970 Apsendesia cristata Lamouroux;Walter: 202, pi. 20, 6- 11. Material. MUZ PIG 1601 /II/6-7. Description. Colony erect, fungiform, a narrow stalk, about mm long, supporting an
. Bulletin of the Natural Histort Museum. Geology series. 100 U. HARA AND TAYLOR. Fig. 28 Mecynoecia suprabajocina sp. nov., MUZ PIG 1601/11/9. Oxfordian, Baltow, Poland. Scanning electron micrograph of branch growing tip showing spoke-liice arrangement of zooecial walls, x 85. 1953 Apsendesia cristata Lamouroux; Bassler: 56, fig. 23,4. 71967 Apsendesia cristata Lamouroux; Walter: 46, pi. 10, figs 1- 2. 1970 Apsendesia cristata Lamouroux;Walter: 202, pi. 20, 6- 11. Material. MUZ PIG 1601 /II/6-7. Description. Colony erect, fungiform, a narrow stalk, about mm long, supporting an expanded, cup-shaped head, subcircular in plan view and averaging 4 mm in diameter (Figs 29-30). Autozooids grouped into fascicles which open around the circumference of the head and increase in number through bifurcation. Frontal side of head marked radially by ridge-like fascicles and convex frontal walls of autozooids. Underside of head an exterior wall with pseudopores and concentric growth lines, sometimes giving rise to downward- growing processes or struts each composed of about 3-6 zooids (Fig. 31). Autozooids long, lacking frontal walls and with polygonal aper- tures when situated in the centres of a fascicle, but possessing pseudoporous frontal walls and apertures with a curved external edge when situated at the border of a fascicle. Apertures about mm in diameter. Gonozooids not observed in specimens from Baltow (see below). Remarks. This is one of the most distinctive of all Jurassic bryozoan species. At Baltow only small colonies, resembling speci- mens from the French Bathonian described as Pelagia clypeata by Lamouroux (1821), have been found. Large colonies depart from a simple cup-shape and become complexly corrugated, like the speci- men described as Apsendesia cristata by Lamouroux (1821). The finding of A. cristata at Baltow in the Oxfordian extends its range upward from the Lower Callovian (Walter, 1970: 204). An apparent occurrence in the Upper Bajoci
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