CEPHALOPOD ADAPTATIONS 



PLATE 4 



Color Pattern and Attitude among the Early Nautiloids 

 Fig. i. CyrtocerasfallaxBa.rra.ade. Silurian of Bohemia. 



Fig. x. Cyrtoceras farvulum Barrande, showing color pattern and restoration of soft parts. Silurian of 

 Bohemia. 



Fig. 3. Cyrtoceras decurio Barrande. Silurian of Bohemia. 



Fig. 4. Orthocerasanguliferum. Middle Devonian of Germany. (After Dunbar.) 



Fig. 5. Geisonoceras tenuitextum (Hall). Middle Ordovician of New York. (After Ruedemann.) 





