160 R. 8. Lull — Fauna of the Dallas Sand Pits. 



ft. in. 

 Top soil. Medium grained sandy loam. Dark red to 



black about 2 7 



Sandy clay, hard, tenacious. Red about 3 



Fine sandy clay with light calcareous segregations and 



streaks. Texture of sand varies. Color yellow. 



Fossils : antelope, bison, mammoth about 2 10 



Fine to coarse clean white sand and gravel. Gravel 



usually under 1 inch. Cross-bedded. Foreset beds 



not over 12-14 inches, usually 3-4 inches. Fossils 



usually found at bottom, especially larger bones. 



Bones clean and usually white or cream in color. 



Mammoth, camel about 14 



Austin chalk. 



Summary of Material. 

 Class Mammalia. 

 Order Carnivora. 

 Family Felidse. 



Subfamily Maelia^rodoiitinse. 



SmiJodon fata-Us (Leidy). Cranium. 

 Order Artiodaetyla. 

 Family Cervidse. 



OdoGoileus sp. "Humerus, antler. 

 Family Antilocapridae. 



Tetrameryx shuleri, gen. et sp. nov. Cranium, maxillary. 

 Family Bovidae. 



Bison alleni Marsh. Left mandible. 

 Family Camelidse. 



Camelops huerfanensis dallasi, subsp. nov. Skull, etc. 

 Camel, gen. et sp. indet. Cannon-bone. 

 Order Perissodactyla. 

 Family Equidae. 



Equus. cf. fraternus Leidy. Cannon-bone, humerus. 

 Order Proboscidea. 

 Family Elephantidse. 

 Subfamily Mammotinae 

 Elephas columhi Falconer 



Description of Material. 

 Smilodon cf. fatalis (Leidy). 



(Fig. 1.) 



A finely preserved occiput of a large sabre-tooth cat 

 is present, bearing the catalogue number 1.52, Southern 

 Methodist University collection (plesiotype). The speci- 

 men shows signs of stream transportation and is there- 

 fore apparently from the lower level of the Lagow sand 

 pit. 



Its affinities with Smilodon are clearly shown by the 

 relatively great vertical extent of the mastoid processes^ 



