82 JURASSIC RHYNCHONELLIDS 
(| 
Uf TN 
Guy 
Pa 7 3-9 
8:5 
Fic. 29. Transverse serial sections of Somalirhynchia sutherlandi (Davidson). Topotype. 
Kimmeridgian. Boulder Beds. West Garty, Sutherland. Specimen donated by the 
Geological Survey, Edinburgh. (3). 
