TAB. XX. 



Ichthyosaurus. 

 Fig. 



1. Skull (lacking end of snout), side view {Ick. longifrons). 



2. Skull (lacking upper surface), side view {Ick. communis). 



3. Tooth of Ick. trigonodon. 



4. 4'. Teeth of Ich. platyodon. 



5. 5'. Teeth of Ich. communis. 



6. 6'. Teeth of Ich. lonchiodon. 



7. Tooth of Ich. intermedius. 



8. Tooth of Ich. tenuirostris. 





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