28 Watson, New Genera of Upper Lias sic Plesiosaurs. 



PLATE. 



A late cervical vertebra of Sthenarosanrus Datvkinst. 

 Founded on one almost perfect specimen, but some details 

 slightly restored by comparison with neighbouring vertebrae. 



1. Left lateral aspect. 



2. Anterior aspect. 



3. Posterior „ 



4. Superior „ 



5. Inferior „ 



All \ natural size. 



