62 C. H. Gordon— Mississvppian Formations 



Cacocrinus multibrachiatus Spirifer aff. S.forbesi 



Cactocrimts proboscidialis Spirifer aff. S. grimesi 



Steganocrinus pentagonus Spiriferina sp. 



Platycrinus sp. Athyris lamellosa 



JPlatycrinus subspinosa Cleiothyris sp. 



Physetocrinus lobatus Platyceras 3 sp. 



Physetocrinus copei Phillipsia aff. peroccidens 



Trematopora vesiculosa Phillipsia aff. loganensis 

 Leplaena rhomboidalis 



At Kingston nine miles west of Hillsboro, the Devonian 

 shales (Percha formation) are overlaid by thick-bedded blue 

 limestone, nodular chert j beds and shaly thin-bedded lime- 

 stone, the total thickness of the formation being about 100 to 

 125 feet. From these beds were obtained the following rep- 

 resentatives of the Lake Valley fauna : — 



Fossils from Kingston. 



Zaphrentis sp. Leptaena rhomboidalis 



Crinoid indet. Schizophoria sioallovyi ? 



Fenestella sp. Productus aff. scabriculus 



Rhombopora ? sp. Spirifer imbrex ? 



Spirifer aff. peculiaris Athyris aff. incrassata 



Syringothyris sp. Cleiothyris roissyi 



Athyris lamellosa Orthoceras sp. 



!Near Cooks on the north side of Cook's Peak, at the south 

 end of the Mimbres Mountains, the Lake Valley beds have a 

 thickness of 275 to 300 feet and show the same lithological 

 characteristics as at Lake Valley. The following fossils were 

 obtained from them at this locality : — 



Fossils from Cooks Range. 



Zaphrentis sp. Productus sp. 



Crinoid stems Spirifer centronatus 



Schizophoris swallowi ? Athyris lamellosa 



Productus semireticulatus Cleiothyris sp. 



Felly Limestone. — Resting upon the eroded surface of gran- 

 ites and schists at Kelly in the Magdalena district at the north 

 end of the Magdalena range, occur 120 to 125 feet of massively- 

 bedded, coarsely crystalline limestone, which, on the evidence 

 above referred to, is usually regarded as Lower Carboniferous 

 in age. This reference receives support also in the general 

 lithologic and stratigraphic relations of the beds. For the 

 most part the bedding is massive and devoid of shale partings. 

 Near the middle of the formation is a dark bluish, weathering 

 to yellowish drab non-crystalline or compact stratum five feet 

 thick- which by the miners is known as the " Silver Pipe Lime- 



