_ Ammonites plicatilis seven. ss1s. 
CEPHALOPODA Ammonites plicatilis 
Sowerby, 1818. 
1818. — SowerBy (James). The Mineral Conchology of Great Britain, 
LAID 40 MPIRIGE; 
Original figure. 
Ammonites plicatilis, reduced 3/4. 
Type specimen. 
[Buckland Collection, at the University Museum, Oxford]. 
T.{ — Ammonites plicatilis, side view; reduced 3/4. TT. — The same, front view. 
TP — Suture-line, nat. size. 
PALAEONTOLOGIA UNIVERSALIS. — 57 
