SUB-CLASS II 



II KXA< 'ORALLA APOROSA FUNGIDAE 



91 



broad mass of costal coenenchyma. Columella lamellar. Jurassic and 

 Cretaceous. 



d'Orb. Jurassic and Cretaceous. 



i, K. and 11. (Fig. 159). Corallum fan-shaped, often corrugated, 

 and with but a single calicular furrow. Columella lamellar. Jurassic and 

 Cretaceous. 



Family 6. Fungfidae. Milne-Edwards and Haime. 



Simple, coralla, or low, laterally expanding colonies. Septa numerous, upper edges 

 synaptimlti (rawly also dissepiments) between the septa. Wall between 

 rorallites absent, but 

 developed on under side of 

 i-ulinti,*. Reproduction sexual 



<>r //;/ gemmation. Jurassic to b 



Recent. 



/'n/i;tin, Lam. p.p. emend. 

 Dana. Corallum simple, de- 

 pressed, discoidal. Septa very 

 numerous, varying in length 

 and thickness, united only by 

 synapticula, and projecting on 

 the lower side as dentated 

 costae. Theca absent. Post- 

 pliocene and Recent. 



Microseris, From. (Fig. 

 160). Corallum simple, dis- 

 '<>idal, circular; upper side vaulted, lower flat and granulated. 



Trochoseris, E. and H. Tertiary and Recent. 



Cyathoseris, E. and H. (Fig. 161). Corallum turbinate, attached. 



FIG. 160. 



Microseris hemisphaerica, From. Greensand (Cenomanian); Le 

 Mans, France, a and 6, Upper and lower surfaces, enlarged ; 

 c, Profile, natural size. 



Cretaceous. 



Young 



FIG. 101. 



OtfOfkottri$ tubregvJarts, Ri-uss. Miocene; Monte Carlotta, near Viccnza, Italy. 

 a, Top view ; b, Side view, natural si/f. 



i.rallitrs arising from periphery by costal gemmation. Common outer wall 

 naked, striated. Cretaceous and Tertiary. 



Lophoseris, E. and H. ; Mycedium, Oken ; Agaricia, Lam., etc. Tertiary and 

 Recent. 



