Roger Weller, geology instructor
firstname.lastname@example.org copyright 2011-R.Weller
The choice for the name is quite interesting.
Dunkle is German for dark and osteus is Latin for bone.
Photo is copyright free for non-commercial educational uses.
Credit photo to R.Weller/Cochise College and the Exhibit Museum of Natural History.
Specimen is on display at the Exhibit Museum of Natural History
University of Michigan, Ann Arbor, Michigan.