THIRD REPORT OF THE DIRECTOR I906 



175 



f LASSIFICATION OF TYPE SPECIMENS BY GEOLOGIC 



FORMATIONS 



B.eferences are to the serial marginal numbers at the left of each page. 



LOWER SILURIC 



BEEKMANTOWN LIMESTONE 



Cephalopoda 



Baltoceras (?) pusillum, 6382 

 Cameroceras (Proterocameroceras) 



brainerdi, 6384, 6385 

 Cyrtendoceras (?) priscum, 6393- 



6396 

 {Cyrtoceras) confertissimum, 6398 

 Endoceras (?) champlainense, 6402- 



6406 

 Eurystomites accelerans, 6409 

 Eurystomites amplectens, 6410 



Eurystomites kelloggi, 6411-6414 

 Orygoceras cornu-oryx, 6433 

 Piloceras explanator, 6434 

 Protocycloceras (?) cf. furtivum, 



6439 

 Protocycloceras lamarcki, 6440-6446 

 Schroederoceras cassinense, 6447, 



6448 

 Schroederoceras eatoni, 6449, 6450 

 Tarphyceras seelyi, 6456-6461 

 Tarphyceras clarkei, 6462 



LOWER CHAZY LIMESTONE 



Cephalopoda 



Deltoceras vaningeni, 6399-6401 

 Endoceras magister, 6408 

 Ooceras (?) lativentrum, 6424 



Plectoceras jason, 6435-6438 

 Spyroceras clintoni, 6451 

 Vaginoceras oppletum, 6464 



Cephalopoda 



Cyrtactinoceras boycii, 6389 

 ■Geisonoceras shumardi, 6415 



MIDDLE CHAZY LIMESTONE 



Geisonoceras chaziense, 6416, 6417 

 Loxoceras moniliforme, 6420? 

 Spyroceras clintoni, 6453 



UPPER CHAZY LIMESTONE 



Cephalopoda 



Barrandeoceras natator, 6383 

 ■Cameroceras tenuiseptum, 6386, 6387 

 Cyrtactinoceras boycii, 6388-6390 

 Cyrtactinoceras champlainense, 6391. 



6392 

 Endoceras hudsoni, 6407 

 Loxoceras moniliforme, 6418, 6419 

 JManno noveboracum, 6421 



Oncoceras pristinum, 6422, 6423 

 Orthoceras lentum, 6426 

 Orthoceras modestum, 6427-6430 

 Orthoceras progressum, 6431 

 Orthoceras (?) vagum, 6432 

 Spyroceras clintoni, 6452, 6454, 6455 

 Vaginoceras oppletum, 6463, 6465-- 

 6468 



