CLASSIFICATION OF TYPE SPECIMENS BY 

 GEOLOGIC FORMATIONS 



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



LOWER 



Spongiae 



Archaeocyathellus ranis, 52 

 Archaeocyathellus rensselaericus, 53 



Cnidaria 

 Dactyloidites asteroides, 251-53 



Brachiopoda 

 Iphidea cf. ornatella, 1429 

 Kutorgina cingulata, 1430-33 

 Lingulella caelata, 1505-8 

 Obolella crassa, 1617-21 

 Obolella gemma, 1622-24 



I/amellibranchiata 



Fordilla troyensis, 2376 



CAMBRIC 



Gastropoda 



Scenella retusa, 3459 



Pteropoda 



Hyolithus communis var. emmonsi, 



3505, 35o6 

 Hyolithus impar, 3507-9 

 Crustacea 

 Aristozoe troyensis, 4138 

 Conocoryphe trilineata, 4204, 4205 

 Microdiscus meeki, 4587 

 Microdiscus speciosus, 4588-91 

 Olenellus (Mesonacis) asaphoides, 



4594-4605 

 Solenopleura ? nana, 4803, 4804 



Brachiopoda 



Acrothele matthewi var. lata, 1068 

 Acrotreta baileyi, 1069-71 



ST JOHN GROUP 



Discinopsis gulielmi, 1370 



Linnarssonia transversa, 1524, 1525 



UPPER CAMBRIC 



Including POTSDAM SANDSTONE 



Vermes 



Scolithus linearis, 547 



Brachiopoda 

 Elkania desiderata, 1385, 1386 

 Glossina acuminata, 1396, 1397 

 Lingulepis antiqua, 1512, 1513 



Lingulepis pinniformis, 1514 

 Linnarssonia pretiosa, 1522, 1523 

 Obolella polita, 1625 

 Syntrophia (?) calcifera, 2102 



Gastropoda 

 Palaeacmaea typica, 3360 



LOWER SILURIC 



Brachiopoda I Schizambon typicalis, 1876-78 



Porambonites gigas, 1755 



BEEKMANTOWN LIMESTONE 



Plantae 



Palaeophycus tubulare, 14-17 

 Cnidaria 



Clonograptus (Goniograptus) sp. 

 nov., 4879 



Didymograptus (Leptograptus) sp. 



nov., 4881 

 Goniograptus thureaui var. postre- 



mus, 4023-33 

 Phyllograptus ilicifolius, 4934 



