— 679 — 
\ 
4) Silurien. 
Euomphalus angulosus Sow. — 
Calcaire de Wenlock, 
Colebrock-Dale. 
- discors Sow. — Calcaire de 
Wenloch , Colebrock- 
Dale. 
- funatus Sow — Aymestry. 
- rugosus Sow. — Calcaire de 
Wenlock, Colebrock- 
Dale. 
Orthoceras annulatum Sow.—Cal¬ 
caire de Wenlock, Cole¬ 
brock-Dale. 
Orthoceras circulare Sow. — Cal¬ 
caire de Wenlock, Dud¬ 
ley. 
Pentamerus Aylesfordii Sow. — 
Aymestry. 
- Knightii Sow. — Aymes¬ 
try. 
- lœvis Sow. — Silurien infé¬ 
rieur. 
Spirifer octoplicatus Sow. — Cal¬ 
caire de Wenlock, Der- 
byshire. 
Gisement inconnu. 
Ammonites acutus Sow. 
Helicina compressa Sow. — Leicestershire. 
