Beginning of Horsetail Creek Excavation
Stefanie A. Derkatsch
scanning technician or creator of digital collection
Frank Howland inside one of the first holes opened up at the Trigonias Quarry. Tent, and supplies and fence are visible. The excavation site was quite significant yielding the remains of a variety of prehistoric rhinoceroses including at least three complete Trigonias skeletons as well as at least thirty-seven skulls, fifty-nine pairs of mandibles, eight pelvic girdles, eight trays of vertebrae, several complete sets of ribs, and numerous limb bones. Duplicate fossils were used in exchange with various institutions across the country including The Field Museum and Harvard University. Location: near Horsetail Creek.
date of photograph
USA, Colorado, Weld County
Yes, shadow, highlights and brightness and contrast adjusted using Photoshop CS5
5 X 7 black and white print scanned with Epson Exprssion 10000XL at 430dpi, 8bit grayscale with unsharp mask level high and backlight correction.
use with permission Denver Museum of Nature & Science