Quart. Journ. Geol. Soc. Vol. LXVII, Pl. X 



XX. 



1a 



3a 



4a 



3fa 



58? 



6b 



/. Jf. Tutcker, Photo. o r „ „ 



Bemrose Ltd., Colic, Derby 



AVONIAN CORALS from the BURRINGTON SECTION (MENDIP). 

 (All figures magnified 1J.) 



