PORTAGE AND CHEMUNG FORMATIONS OF MARYLAND 345 



TABLE III 



Upper Devonian Faunas of Maryland 



The numbers on accompanying chart indicate the fossils of subjoined Ust. Only 

 forms specifically identified from the brachiopod fauna of the middle and lower Jen- 

 nings are recorded. 



Portage , 



OR 



Hamil- 

 ton 



2. 

 3- 

 4- 

 S- 

 6. 



7- 

 8. 



9- 



10. 



13- 

 14. 



IS- 

 16. 



17- 

 18. 

 19. 

 20. 

 21. 

 22. 



23- 

 24. 



25- 

 26. 

 27. 

 28. 

 29. 

 3°- 

 31- 

 32- 

 33- 

 34- 

 35- 

 36. 

 37- 

 38- 

 39- 



Atrypa reticularis (L.) 



Camarotoechia congregata (Conrad) 



Camarotoechia eximia Hall 



Camarotoechia sappho Hall (?) 



Chonetes scitulus Hall 



Cyrtina hamiltonensis Hall 



Leiorhynchus globulif orme (Vanuxem) 



Leiorhynchus mesacostale Hall 



Lingula spatulata Vanuxem 



Productella lachrymosa (Conrad) 



Productella speciosa Hall 



Pugnax pugnus (Martin) 



Schizophoria striatata (Schloth) 



Spirifer marcyi Hall var 



Spirifer mesacostalis Hall 



Spirifer mesastrialis Hall 



Spirifer pennatus var. posterns Hall & Clarke 



Stropheodonta demissa Conrad 



Tropidoleptus carinatus (Conrad) 



Cypricardella bellistriata (Conrad) 



Cypricardella gregaria (Hall) 



Ectenodesma birostratum Hall 



Goniophora glaucus Hall 



Nuculites oblongatus Conrad 



Palaeoneilo brevis Hall ? 



Pterinea chemungensis Conrad 



Bellerophon maera Conrad 



Cyclonema concinnum Hall ? 



Cyclonema hamiltoniae Hall 



Euomphalus laxus Hall 



Pleurotomaria itys Hall 



Coleolus tenuicinctus Hall 



Phacops rana Green 



Ambocoelia umbonata (Conrad) 



Dalmanella tioga Hall 



Douvillina cayuta Hall & Clarke 



Orthothetes chemungensis (Conrad) 



Schizodus gregarius Hall 



Spirifer disjunctus Sowerby 



4. An interesting additional feature is that there is an earlier devel- 

 opment of red beds in the eastern sections. Red strata appear below 

 the top of the Portage in the east, but become marked only toward the 



