See:
Martin, Larry, and Dixie L. West. 1995. The recognition and use of
dermestid (Insecta, Coleoptera) pupation chambers in paleoecology.
Palaeogeography, Palaeoclimatology, Palaeoecology 113:303-310.
They illustrate circular pupation chambers on bone and horncores similar to
those you describe. Hope this helps.
Sincerely,
Barry W. Baker
Forensic Scientist - Morphology
Morphology Section
U.S. National Fish & Wildlife Forensics Laboratory
1490 East Main Street
Ashland, Oregon 97520-1310
USA
Phone: 541.482.4191
Fax: 541.482.4989
E-mail: [log in to unmask]
Web: http://www.lab.fws.gov
Adjunct Professor of Anthropology
Department of Sociology and Anthropology
Southern Oregon University
Ashland, Oregon
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