Figure 59 Devonian crustaceans. (B-H, trilobites). A 

 Echinocaris punctata, xfy. B Terataspis (Lichas) grandis, xl/16 

 (after Schuchert). C Cryphaeus boothi. D Homalonotus (Dip- 

 leura) dekayi, xtyg. E Dalmanites pleuroptyx, x J />- F Phacops 

 rana, x]/ 2 . G Dalmanites nasutus, xYz. H Proetus rowi. 



