MiLLWARD : Fossils from Meadville, Pa. 485 



Prodiictella lacrymosa, r. Elymella paiula, r. 



P. boydi, c. Paleoneilo triiticata, c. 



Camarota'cliia orbicularis, c. Conularia confinens, r. 



C. contracta, r. Orthoceras %\)., rr. 



Spirifer sp., r. 



12. Meadville lower shale. 



Orbiculoidea sp., r. Glossites depressus, r. 



Schuchertella desiderata, rr. Schizodus chemungensis, rr. 



Chonetes setigerus, r. Pholadella newberryi, r. 



Athyris angelica, rr. 



13. Meadville upper limestone. 



Lingulodiscina Jiewberryi, c. Ceraiiocaris s^)., rr. 



Cainarota'chia sp., c. Apedodus priscus, r. 



Chonetes setigerus, c. Cladodus coniger, r. 



Conularia victa, c. Helodus comptus, r. 



Proetus %\>., rr. Helodus gibberulus, c. 



14. Meadville upper shale. 



Crinoids of species not yet determined. 



Lingula sp. r. Athyris angelica, r. 



Glossina waverlyensis, r. Z^fz/rt pandoriformis, r. 



Lijigulodiscina newber/yi, c. Paleoneilo sulcatina, r. 



Schizophoria tioga, r. Modiomorpha tioga, r. 



Schuchertella crenistriata, rr. Bellerophon nactus, rr. 



ChoTietes setigerus, c. Conularia victa, r. 



Productella boydi, r. Orthoceras leander, r. 



Cajnarotcechia contracta, r. Orthoceras 2 sps. 



In addition to the species listed above, three specimensof anew spe- 

 cies of Lepidechinus have been found near Meadville, but unfortunately 

 not /« j-Z/a;. It is not known from what horizon they came, but it 

 seems most probable that they were from the Riceville shale, although 

 the Sharpsville upper sandstone and the Meadville upper shale are 

 considered as possibilities. 



Conditions of Deposition. 

 A number of facts show that the rock-layers of the region of Mead- 

 ville are shallow water deposits, (i) First among these facts is the 

 nature of the strata, nearly all the formations being sandstones or 

 shales. The only limestones present are very impure. (2) In the 

 Riceville shale, Cussewago sandstone, and the Sharpsville lower sand- 



