Grabau — Faunas of the Hamilton Group. 



317 



fossils are found only in the upper part of the limestone, where it is of a less 

 compact character. The corals however are mainly found in the lower part 

 of the rock. 



The following is the list : 



Crustacea : 



*1 Phacops rana. c 



*2 Cryphseus Boothi. r 



2a C. Boothi var. calliteles (?) R 

 f 4 Proetus macrocephalus. R 



Cephalopoda : 



*9 Orthoceras subulatum. R 

 fll O. Telamon. r 



Gasteropoda : 



19 Platyceras carinatum. rc 



f21 P. bucculentum. R 



23 P. (Orthonychia) attenuatum. rc 



*24 Platyostoma (Diaphorostoma) lineata. re 



25 Euomphalus laxus. R 



+26 E. rudis. R 



+27 Pleurotomaria Lucina. R 



Lamillibranchiata : 



34 Aviculopecten princeps. rc 

 41 Actinopteria decussata. rc 

 Lyriopecten orbiculatus. 

 f 45 Mytilarca (Plethomytilus) oviformis. <3 



46 Modiomorpha concentrica. c 

 +49 Goniophora modiomorphoides. o 



50 Cypricardella beilistriata. R 

 +63 Conocardium sp. r 



Brachiopoda : 



80 Pholidops linguloides. r 



f81 P. oblata (?). r 



*82 Rhipidomella VanuxemL C 



83 R. leucosia. r 



84 R. Penelope, c 

 *85 R. idoneus. r 



89 Stropheodonta demissa. R 



