TYPE SPECIMENS OF PALEOZOIC FOSSILS 



21 



Diet yophy ton telum w Prismodictya telum 

 Dictyophyton tenue see Tylodictya ? tenuis 

 Dictyophyton toraaculumw Clathrospongia? 

 tomaculum 



Dictyophyton tuberosum see Hydnoceras 

 barroisi 



Dictyophyton tuberosum see Hydnoceras 

 tuberosum 



Dictyo phytum ramosum see Botryodictya 

 ramosa 



Ectenodictya eccentrica see Acloeodictya (?) 

 eccentrica 



Ethmophyllum rarum see Archaeocyathellus 

 rarus 



Ethmophyllum rensselaericum see Archaeo- 

 cyathellus rensselaericus 



hallodictya Hall & Clarke 

 Hallodictya cottoniana Hall & Clarke 

 "95 1JL t lL TYPE Hallodictya cottoniana Hall & Clarke. 



New York state museum memoir 2. 1898. p. 142, pi. 41, 

 fig. 12. 



Chemung beds Cotton hill, near Avoca N. Y. 



Hallodictya sciensis Hall & Clarke 



96 • £ -^ i plastotype Hallodictya sciensis Hall & 



Clarke. New York state museum memoir 2. p. 140, 

 pl. 36, ng 8, 



Chemung beds Scio N. Y. 



helicodictya Hall & Clarke 

 Helicodictya (?) concordia Hall & Clarke 



97 2 3_oo. plastotype Helicodictya (?) concordia Hall 



& Clarke. New York state museum memoir 2. 1898. 

 p. 115, pl. 27, fig. 2. 



Chemung beds Concord station Pa. 



Hyalostelia (?) marcellia see Dictyospongia (?) marcellia 

 hydnoceras Conrad 

 Hydnoceras barroisi Hall & Clarke 

 ^3_2_n plastotype Dictyophyton tuberosum Barrois. 



Annales de la Societe geologique du nord. 11:82, pl. 1, 

 fig. la-e. 



