BIBLIOGRAPHY AND NOTES 



659 



"The fauna is related to the Gulf and Atlantic Coast Cretaceous faunas 

 more closely than to those of the Rocky Mountain region. Its horizon is be- 

 lieved to be a short distance above that of the Austin chalk and the Niobrara 

 limestone — that is, in the lower part of the Montana group." 



This locality is near the place at which Johnson (83, page 105) col- 

 lected the fossils described by him as Pierre, but inasmuch as no sand- 

 stone was found by the writer at this locality it is probable that the fossils 

 are slightly lower than Johnson's in the section. His description is as 

 follows : 



"Two miles southwest of Santa Rosa Mountain, where the main wagon 

 road leaves the basalt-capped mesa for the valley below, there are exposed In 

 the valley at the foot of the mesa fossiliferous shales and sandstones. The 

 exposure is not large, but a small arroyo has lemoved some of the looser 

 shales, leaving still in place the calcareous nodules in which the fossils are 

 most abundant. 



"The following species were collected at this locality : 



Ostrea congesta Conrad ? 

 Protocardia rara E. & S. ? 

 Astarte evansi H. & M. 

 Nucula suhplana M. & H. 

 Solen cuneatiis Gabb. ? 

 Lingula sudspatulata H. & M. 

 Tritorium kanahense Stanton 

 Natica sp. undet." 



Baculites anceps Lamarck 

 Heliococeras pariense White ? 

 Beryx sp. undet. 

 Ar^ca madridensis Johnson ? 

 Cyprimoria ? sulcata Johnson 

 Turritella galisteoensis Johnson 

 Admctopsis ? elevata Johnson 



Bibliography and Notes 



The following list contains the principal publications in which infor- 

 mation is to be found relative to the rock formations of the several coal 

 fields described in this paper, and includes some outside publications 

 which have had a direct influence on investigations in these fields. The 

 publications are arranged in chronological order and brief notes are 

 attached, calling attention to the character of the information relating 

 to the formations here described. These notes are intended to serve 

 the double purpose of pointing out the data presented in each paper and 

 of placing them in such a w^ay that they will form a history of investiga- 

 tion. Since this paper is not primarily concerned with the economic 

 resources of the coal fields, little attention is given to purely economic 

 reports such as mineral resources. However, considerable geologic infor- 

 mation is given in some of the economic papers and many of them are 

 included in the list. There are many papers that make only casual refer- 

 ence to the New Mexico coal fields without giving any definite informa- 

 tion. Most of these have been omitted. In order that the papers may be 



