356 



W. E. WEATHER 



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from patches two to four feet square, and in each instance one or 

 more tracks were found. Some of the tracks were shallow, due 

 to the abrasion of gravel swept over the bed rock by the swift water 

 of freshets, and others were rendered indistinct by superimposed 

 tracks. The creek bed, which is floored with the stratum carrying 

 the tracks, varies in width from four to twelve feet for a distance 



of about 800 feet. On 

 ■ "^ the basis of the writer's 

 observations, he is con- 

 vinced that the estimate 

 made by residents of the 

 neighborhood, placing 

 the number of tracks 

 at considerably over a 

 hundred, is not likely 

 to be extravagant. 

 This number could 

 quite likely be consider- 

 ably increased by clear- 

 ing away the slumped 

 material along the foot 

 of the caving banks. 

 Rehable parties who 

 have seen the locality 

 when the whole expanse 

 of rock in the creek had 

 been swept clear of its 

 covering state that it ex- 

 hibits a maze of tracks 

 for fully two-thirds of the foregoing distance. Near the lower or 

 southern end of the rock exposure, where erosion has cut through 

 the level-lying stratum bearing the tracks, a marginal expanse of 

 the limestone on either side of the channel shows that the tracks are 

 infrequent or entirely absent, but northward they are known to be 

 present until the rock disappears under the stream bed. 



The footprints examined varied in length from eight to twenty 

 inches. A plaster cast made by Mr. C. B. James, of Hamilton, 



Fig. 2. — Cottonwood Creek along bed of which 

 dinosaur tracks are found. (Photo by C. B. James.) 



