NORTH AMElIirAN KAl'.LY TERTIARY BRYOZOA. 



85 



The septulae are rarely visible in fos-il form-, although tin- inultiporous septulae 

 ii leave a large communication pore. 



In the study of the fossil bryo/.oa we have considered that the ovieell which 

 leave.- a trace above the mural rim is hyperstomial. When the ovicell projects much 



A. Conopeum B. Acanthodesia C. Adenifera 



O. Cupuladna 



' ,*',*','>! 

 && 



v* 



F Otionella 



!' 



G. Trochopora 



E. Heliodoma 



M* 



l*Wm^%V 



Nzl*lv 



S;^ 



isslsV 



H. Crepis 



I. Discoflustrellana 



FIG. 24. (Jeneni f .Mcuiliraiiiporae without ovicell. 



.\.Ciiiiiiiirniii lnrnii.i-i r,u>.k. fs.'ii'. X lio. <'laibnriiian. Claiborne. Alabama. 



I 1 ,, .\i-iiiitliinlixiii xiirnrtii Auiliniin, IsJii. ur,. Kecent. 



C. Ai/i'iiifini iiiiirniiitii Calm am! r.nsslfr. 1917. X 20. Middle .Tiirksoiii.-m, near Leiiuds 

 1'iTry. South Carolina. 



I ). Citiiiilinlrin i iniiirii'iisis Husk, ls."i!i, X L'H. I.uwpr Jlinreiie nf ( 'ushi Rica. 



I-;, lli'liniliiiiiii ini/ilifiitil ( ':il\el. I'.inT. :'.o. lii'i'-'iit. 



F. (HiitnHJii iHTi'ii-atii Canu and l:,-iss]ci. ]'.HT. X 20. Lower Jacksmiiaii, Jackson. Mi.ssis- 

 sippi. 



<;. Trnrlitiiini-11 Imiii-i Lea. IN:'..">. -' -'n. ( |;iibnri-iian. i 'la ii" TIIC. Alabaiiia. 



11. rn-iiix l<, ni/iii, .< Jullien. X I'll. Kercur. 



I. Itixi-iitliifstrrUariti ilomn T )'( irbimiy. < 'ivUM-ron- i Sennnian 1 of Francv. 



over the mural rim it is closed l>y the (ipernilnm under the ope-iiim. hut it always 

 remains open when it does not project over the mural rim. 



An ovicell ch ~cd hy the operenhim i- often immersed, making its distinction 

 from the endozooecial a matter of ^ri-at ''are. 



