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ANNALS NEW YORK ACADEMY OF SCIENCES 
Wheeleri and, if so, indicates a connection with the older faunas. The 
Pleurophorus does not seem to show the linear posterior tooth of that genus 
and its relations are therefore doubtful. It would be unsafe to say anything 
definite regarding this occurrence. In fact, it might be unwise to assert 
definitely from intrinsic evidence that it was of Carboniferous rather than 
Triassic age. 
Although not of foremost importance in connection with the subject in 
hand, it may be well to remark on the lower faunas of the Pennsylvanian in 
the Sacramento Mountains. These were naturally obtained on the bold 
western front of the range, chiefly in the vicinity of Alamogordo and La Luz 
Canyon. Beneath the limestone mass which caps the summit at Cloudcroft 
there is, as has already been pointed out, an extensive series of sandy strata 
largely characterized by a red color and belonging to what is generally called 
the “Red Beds.” They comprise, it is estimated, between two and three 
thousand feet of “Red Beds” and below these, northeast of Alamogordo, 
some 1500 feet of sandstone, shale and limestone, in which the red color is 
lacking, but which may be represented by “Red Beds” elsewhere. The col¬ 
lections were made in the lower part of the sandy series chiefly from the 
basal 1500 feet, but also from some heavy limestones which occur in the lower 
part of the “Red Beds” overlying. Some of the more important species 
identified in twelve collections are: 
Triticites secalicus 
Rhipidomella Pecosi 
Enteletes hemiplicatus 
Derbya crassa 
Meekella striaticostata 
Chonetes Flemingi 
Productus semireticulatus 
Productus punctatus 
Productus Cora 
Productus Nebraskensis 
Marginifera Wabashensis 
Marginifera splendens 
Dielasma bovidens 
Spirifer Rockymontanus 
Spirifer cameratus 
Squamularia perplexa 
Ambocoelia planiconvexa 
Composita subtilita 
Leda bellistriata var. attenuata 
Aviculipinna Nebraskensis 
Pseudomonolis Hawni 
Pseudomonotis Kansasensis 
Myalina subquadrata 
