ABSTRACTS 



Authors of scientific papers are requested to see that abstracts, preferably 

 prepared and signed by themselves, are forwarded promptly to the editors. 

 Each of the scientific bureaus in Washington has a representative authorized to 

 forward such material to this journal and abstracts of official publications should 

 be transmitted through the representative of the bureau in which they originate. 

 The abstracts should conform in length and general style to those appearing in 

 this issue. 



GEOLOGY. — Contributions to the geology and 'paleontology of San Juan 

 County, New Mexico. 2. Vertebrate faunas of the Ojo Alamo, 

 Kirtland, and Fruitland formations. Charles W. Gtlmore. U. S. 

 Geological Survey Professional Paper 98-Q. Pp. 279-308, with 8 

 plates and 13 figures. 1916. 

 The known vertebrate fauna of the dinosaur-bearing beds in the San 

 Juan basin in northern New Mexico consists of a considerable number 

 of genera and species. The dinosaur-bearing deposits are subdivided 

 into three formations — the uppermost, or Ojo Alamo, the Kirtland, .and 

 the Fruitland. No mammal, bird, or amphibian remains have yet 

 been recorded from these formations. The dinosaurs were apparently 

 the predominating vertebrates of these times, and they afford the best 

 basis for a comparison with forms found elsewhere. The vertebrate 

 remains from the Ojo Alamo, Kirtland, and Fruitland formations show 

 beyond all question that they pertain to a fauna or faunas distinctly 

 older than that of the Lance, and such evidence as there is contributes 

 to the support of the contention that the Ojo Alamo sandstone is syn- 

 chronous with the Judith River and Belly River formations as found 

 in areas to the north. R. W. S. 



GEOLOGY. — Contributions to the geology and -paleontology of San Juan 

 County, New Mexico. 3. Nonmarine cretaceous invertebrates of the 

 San Juan basin. T. W. Stanton. U. S. Geological Survey Pro- 

 fessional Paper 98-R. Pp. 309-326, with 5 plates and figures. 

 1916. 

 Overlying the Pictured Cliffs sandstone with apparent conformity in 

 the San Juan basin and underlying the Puerco formation is a group 

 of nonmarine sediments, coal bearing in the lower part, which in many 

 previous reports have been referred more or less doubtfully to the Lar- 

 amie formation. The rocks occupying this interval are fully described 



185 



