74 
0SCULIP0RID3-:. 
Diagnosis. 
Zoarium with thick, well-rounded branches, rising from a broad, 
flat base ; the branches divide irregularly and are usually 
alternate ; each branch bears numerous lateral processes, which 
are usually opposite or nearly opposite. 
The reverse surface in well-preseiwed parts of the zoarium is 
tumid aud ribbed, and, when worn, numerous openings are 
produced by the wearing away of the hinder walls of the 
zooecia. 
There are from six to twenty zooecia in eacli lateral process ; the 
groups are circular or maj’ be flattened, and are then biserial 
or tri serial. 
Gonoecium on reverse surface ; ovoid, but with pointed ends. 
Dimensions. 
1 
Von Reuss’ 
type. 
Xovak. 
Cambridge Greensand. 
B.M. 
D. 1872. 
B.M. 
D. 18S0. 
mm. 
mm. 
mm. 
mm . 
Zoarium: height 
3'.5 
5-20 
3*5 
3-6 
,, diameter of branch 
•6 
1-3 
•4-- 6 
*5-1 
, , diameter of base . . . 
— 
12 
1-6 
4 
Zooecia : diameter of aperture 
— 
— 
•1 1 
•1--15 
, , distance between 
centres of adjacent 
apertures... 
— 
— 
•2--4 
•3--0 
Distribution. 
British : 
Cambridge Greensand : Cambridge. 
Foreign : 
Cenomanian — Korycaner Schichten : Kamajk, Kank, Jine, etc., Bohemia 
Ostrea cnrinata beds, Kahlebusch, near Dohna, Saxony. 
Lower Planer : Schillinge, near Bilin,^ and Weisskirchlitz, 
Bohemia. 
Figures. 
PI. VI. Fig. 4. Base of a young zoarium. Vine’s Osculipora 
pleheia. Cambridge Greensand. Jesson Coll. Fig. the obverse 
^ The elliptical apertures of worn zooecia may be 2 mm. long. 
