DEVONIAN OF SOUTHEASTERN MISSOURI. 



131 



GRAND TOWER LIMESTONE 



Blastoidea 



Nucleocrinus verneuili (Troost) 



Brachiopoda 



Athyris fultonensis (Swallow) 

 A try pa reticularis (Linnaeus) 

 A try pa spinosa Hall 

 Camarotoechia sappho Hall 

 Camarotoechia welleri Branson 



Williams 

 Chonetes mucronatus -(Hall) 

 Craniella cf. hamiltoniae (Hall) 

 Pentamerella arata (Conrad) 

 Pholidostrophia iowaensis (Owen) 

 Productella spinulicosta Hall* 

 Scliizophoria striatula (Schlotheim) 

 Schuchertella chemungensis pectinacea 



(Hall) 

 Schuchertella pandora Hall 

 Spirifer grieri Hall 

 Spirifer varicosus Hall 

 Stropheodonta concava Hall 

 Stropheodonta demissa (Conrad) 

 Stropheodonta patersoni Hall 



Pelecypoda 



Actinopteria cf. boydi (Conrad) 

 Conocardium ohioense Meek 



Leiopteria cf. dekayi Hall 



Paracyclas elliptica Hall 

 Gastropoda 



Diaphorostoma genevievensis Branson 

 and Williams 



Platyceras carinatum Hall 



Platyceras nodosum Conrad 

 and Cephalopoda 



Gomphoceras grandtowerensis Branson 

 and Williams 



Gomphoceras hyatti Whitfield 



Gomphoceras cf. impar Hall 



Gomphoceras niissouriensis Branson and 

 Williams 



Gomphoceras plenum? Hall 



Nephriticeras sp. 



Orthoceras cf. subulatum Hall 

 Trilobita 



Dalmanites sp. 



Phacops cristata Hall 



Proetus crassimarginatus Hall and 

 Clarke 



Proetus haldimani Hall 



Proetus sp. 

 Pisces 



Onychodus sigmoides Newberry 



BEAUVAIS SANDSTONE. 



Brachiopoda 



Atrypa reticularis (Linnaeus) 

 Chonetes vicinus (Castelnau) 

 Schizophoria striatula (Schlotheim) 



Spirifer granulosus (Conrad) 

 Stropheodonta demissa (Conrad) 

 Gastropoda 

 Tentaculites sp. 



ST. LAURENT FORMATION 



Coelenterata 



Cyathophyllum halli Edwards and Haime 



Favosites limitaris Rominger 

 Bryozoa 



Unidentified species. 

 Brachiopoda 



Atrypa reticularis (Linnaeus) 



Camarotoechia congregata (Conrad) 



Camarotoechia prolifica (Hall) 



Chonetes coronatus (Conrad) 



Chonetes mucronatus (Hall) 



Chonetes scitulus Hall 



Cyrtina alpenensis Hall and Clarke 



Cyrtina hamiltonensis Hall 



Eunella linklaeni (Hall) 



Leptostrophia perplana (Conrad) 



Pholidops cf. oblata Hall 



Spirifer audaculus (Conrad) 

 Spirifer pennatus (Atwater) 

 Strophalosia truncata (Hall) 

 Stropheodonta demissa (Conrad) 

 Tropidoleptus carinatus (Conrad) 



Pelecypoda 



Actinopteria cf. boydi (Conrad) 

 Glyptodesma cf. erectum (Conrad) 

 Leptodesma rogersi Hall 

 Limoptera macroptera? (Conrad) 

 Pterinea flabellum (Conrad) 



Gastropoda 

 Tentaculites sp. 



Trilobita 



Cryphaeus boothi Green 

 Homalonotus sp. 

 Phacops rana (Green) 



