DINOSAUR TRACKS IN HAMILTON COUNTY, TEXAS 357 



shows the dimensions indicated in Figure 5. This particular track 

 was covered with deep mud at the time of the writer's visit, but 

 enough mud and water was baled out to determine that it was only 

 one of three large tracks within a space of scarcely more than a 

 square yard. 



Near the southern end of the locality, where the tracks are 

 infrequent, a single, large, well-formed track three or four inches 

 deep and about fifteen inches long was found. Judging the prob- 

 able direction of movement from the orientation of the track, 



Fig. 3. — Dinosaur tracks in the bed of Cottonwood Creek, Hamilton County, 

 Texas. (The tracks were lightly dusted with white powder to secure definition in the 

 photograph.) 



it appeared that other tracks of the same individual should be 

 present on the uncovered rock. Two saucer-shaped depressions 

 were located in the direction of motion, at intervals of about four 

 feet, which were apparently vestiges of footprints, though quite 

 indistinct. The stride of the animal seems therefore to have been 

 about the same as that measured by Shuler at Glen Rose, and the 

 size of the tracks in the two localities corresponds quite closely. 

 This was the only instance in which the stride of a given individual 

 could be measured, though undoubtedly other instances could be 

 found if the rock were adequately cleared of debris. 



A correlation of the geologic horizons at which the tracks are 

 found in Somervell and Hamilton counties would be particularly 



