TAB. IV. 



Plesiosmirus Bernardi, nat. size. 



Fig. 



1. Side view of centrum of an anterior cervical vertebra. 



2. Front view of ditto. 



3. Upper view of ditto. 



4. Under view of ditto. 



5. Side view of centrum of a cervical vertebra. 



6. Front view of ditto. 



7. Side view of centrum of cervical vertebra, slightly distorted by posthumous 



pressure. 



8. Front view of ditto. 



9. Side view of centrum and base of neural arch of cervical vertebra. 



10. Side view of centrum and base of neural arch of a succeeding cervical 



vertebra. 



11. Side view of centrum and neural arch, minus spine, of a cervical vertebra of a 



larger individual. 



From the Upper Green-sand, near Cambridge. In the British Museum. 



