Roger Weller, geology instructor
wellerr@cochise.edu copyright 2011-R.Weller
mosasaur bone replaced by opal-10
digits-closer view
Andamooka, Australia
mosasaur
689a
Photo is copyright free for non-commercial educational uses.
CC-BY-NC
Just credit photo to R.Weller/Cochise College.
Opal specimen courtesy of Opex Opal
Specializing in precious opals and opal jewelry
Dagbjorn Johnson
P.O. Box 50548, Santa Barbara, California 93150
opex@gte.net