Revision of American Eocene horses

p. 221-264, [4] leaves of plates : ill. ; 24 cm.Includes bibliographical references

Two new deer from Pleistocene of China

18 p. : ill. ; 24 cm.Includes bibliographical references (p. 17-18)

Structure and relationships of Plesiadapis

30 p. : ill. ; 24 cm.Includes bibliographical references

Early Paleocene mammal

7 p. : ill. ; 24 cm.Includes 1 bibliographical reference (p. [1])

New rodent

6 p. : ill. ; 24 cm.Includes bibliographical references (p. 5-6)

Clark Fork, Upper Paleocene, fauna

24 p. : ill. ; 24 cm.Includes bibliographical references (p. 23-24)

Primates, Carnivora, Condylarthra, and Amblypoda

28 p. : ill. ; 24 cm.Includes bibliographical references (p. 27-28)

Limbs of Sauropoda

p. 199-208 : ill. ; 24 cm

Tertiary deposits of the Bighorn Basin

p. 57-67, [3] leaves of plates (1 folded) : ill., map ; 24 cm.Includes bibliographical references.New facts regarding the Tertiary stratigraphy of the basin. A vertebrate faunal horizon near the top of the Fort Union (?) The Buffalo Basin section. Distribution of the Knight Formation (Wasatch). Distribution of the Lysite and Lost Cabin formations (Wind River). The Tatman Formation -- New facts regarding the lithology of the Tertiary sediments. Gravel beds -- Date of the Eocene deformation in the Bighorn Basin -- Date of dissection of the basin deposits."1. The Lower Eocene sediments of the Bighorn Basin represent the alluvial filling of an intermontane trough of downwarp. 2. They have been transported from the surrounding mountains as shown by the lithology of the gravels, sands and clays. No volcanic ash occurs. 3. They are stream transported and have been deposited in stream channels or spread over flood plains. No evidence in favor of wind transportation has been observed. 4. The Eocene clays are banded in more or less regular alternation, red and blue. This may be due to climatic causes leading to concentration of iron salts and their oxidation. 5. The beds are divisible into three formations, the Knight, Lysite and Lost Cabin, readily separable by their fossils, but not differing lithologically and conformable throughout. The Wind River (comprising the Lysite and Lost Cabin) is confined to the southwest portion of the basin (McCulloch Peak possibly excepted) and has been removed elsewhere by erosion. 6. The Lower Eocene formations are overlain conformably by another set of beds, containing much lignite, the Tatman Formation, in which determinable vertebrate fossils have not yet been found. Invertebrate fossils suggest that it may be of Eocene age, possibly Bridger. 7. The Tatman Formation is overlain by andesitic gravels of doubtful age, of which but a remnant on the top of Tatman Mountain is preserved in place. 8. Deformative stresses have acted on the basin filling after the deposition of the Tatman formation, flexing it into marginal anticlines and synclines and increasing the centripetal dip of the beds. 9. The major dissection of the basin is, probably, a comparatively late event, geologically speaking, perhaps referable, in part, to the Pleistocene"--P. 66-67

Paleocene deposits, San Juan Basin, N. Mex.

p. 297-316, [10] leaves of plates (2 folded) : ill, map ; 24 cm.Includes bibliographical references.Itinerary -- Structural relationships; location of exposures -- Pre-Puerco formations. Conglomeratic sandstone with fossil logs. Shales with dinosaurs, upper horizon. Lower conglomerate. Shales with dinosaurs, lower horizon. Age of the Ojo Alamo beds -- The Puerco Formation. Basal uncomformity. The Puerco sediments. 1. Ojo Alamo section. 2. Kimbetoh Arroyo section. Thickness of the Puerco. Fossil levels; origin of the Puerco sediments -- The Torrjon Formation. The Torrjon sediments. Torrejon fossil levels. Thickness of the Torrejon. Torrejon-Wasatch relationships. Origin of the Torrejon sediments -- Age of the Puerco and Torrejon -- "Nacimiento" as a group name -- Summary -- Collecting localities."The more important stratigraphic results may be summarized as follows: 1. Separation of the pre-Puerco beds into several members which are, in descending order, a heavy conglomeratic sandstone with much fossil wood, a series of clays with channel sandstones, a conglomerate and a series of dove-colored clays, red-banded near the top. The two conglomeratic members have disconformities at their bases. Dinosaurs occur, especially at two levels separated by the lower conglomerate. More or less of this series of beds may be correlateable with the Animas formation. 2. Complete confirmation of Barnum Brown's observation regarding the unconformable relationship of the Puerco with respect to the conglomeratic sandstone with fossil logs on which it rests. A topography in low relief was developed on the surface of this sandstone previous to the deposition of the Puerco clays, which cover up these hills and valleys. 3. Accurate location of the two Puerco fossil levels and demonstration of the fact that Polymastodon is confined to the uppermost of the two levels. For their position see sections A and B, Fig. 2. 4. Measurement of the thickness of the Puerco on continuous exposures from the unconformity at its base to the level of the first occurrence of Torrejon fossils. 5. Discovery of fossil plants in the Puerco. 6. Accumulation of data which seem to prove the fluviatile origin of the Puerco sediments. 7. Discovery of a new fossil horizon in the Torrejon, 100 feet below the horizon from which fossils had hitherto been obtained. 8. Finding of Torrejon fossils at still lower levels (see sections). 9. Location of the Torrejon levels with reference to those of the Puerco (see actions A and B, Fig. 2). 10. Correlation of the Rio Puerco and Arroyo Torrejon sections published by Dr. Gardner of the U.S. Geological Survey with the sections measured by the American Museum party. 11. Accumulation of data which seem to prove the fluviatile origin of the Torrejon sediments"--P. 314-315