324 



S. WELLER FAUNA OF THE FERN GLEN FORMATION 



Rhipidomella miclielinia, Productus sampsoni, Spirifer grimesi, Spirifer 

 cliouteauensis, Spirifer vernonensis, Athyris lamellosa, and Cliothyris 

 prouti. This group of species, with the possible exception of Spirifer 

 cliouteauensis, includes by far the most characteristic brachiopods of the 

 Fern Glen fauna, and the lists as a whole show beyond question the close 

 relationship of the brachiopod elements in the two faunas. 



Saint Joe marble fauna. 



Zaphrentis sp. 1. 



cf. Zaphrentis tenella Mill. 2. 



cf. Scaphiocrinus missouriensis Sh. 

 Leptxna rhomboidalis Wilck. 2 

 Schizophoria resupinata Mart 

 Schizophoria swallovi Hall 

 C Rhipidomella michelinia Lev. 



1 Rhipidomella thiemei White \- 6. 

 (^ Rhipidomella vanuxemi Hall 



cf. Chonetes oraatus Shum. 1. 

 Productella hallana Wale. 3. 

 Rhynchonella coopereusis Shum 

 Pugnax acuminatus Mart. 1. 



j Spirifer grimesi Hall 



( Spirifer striatiformis Meek 



{Spirifer kinderhookensis ] 

 Spirifer oralis Phil. j 



Spirifer marionensis Shum. 3. 

 Spirifer cf. mesocostalis Hall 1 

 Spiriferina octoplicata. Sow. 1 

 Athyris lamellosa Lev 

 Athyris hannihalensis S 

 Athyris prouti Swall. 3. 

 Athyris sp. 1. 

 Cliothyris roissyi Lev. 1. 

 Ptychospira sexplicata W. & W. 1, 

 cf. D ielasma burlingionensis White 1. 



{Capidus eguilaterus Hall ] 

 Capulus sp. J ' 



UU VY . -L . 



Jwall. j 



Fern Glen representatives. 



Leptsena rhomboidalis Wilck. 

 Schizophoria swallovi Hall. 



Rhipidomella michelinia Lev. 



Chonetes logani N. & P. 

 Productus sampsoni n. sp. 

 Camarotcechia persinuata (Winch ). 



Spirifer grimesi Hall. 



Spirifer cliouteauensis n. sp. 

 Spirifer vernonensis Swall. 



Spiriferina subtexta White. 

 Athyris lamellosa Lev. 

 Cliothyris prouti ( Swall. ) . 



Cliothyris roissyi Lev. 

 Ptychospira sexplicata W. & W. 



Platyceras paralius W. & W. 



In the non-brachiopod portion of the Fern Glen fauna there is no 

 form more characteristic than the bases of the bryozoan genus Evactin- 

 opora, and although the presence of this genus was not recorded by 

 Williams, it has been noticed in abundance by Ulrich. 10 The coral and 



10 U. S. Geological Survey, Professional Paper no. 24, p. 101. 



