Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Hopkins, A. D. 1900c. Work of the prehistoric scolytid (Phloeosinus squalidus Scudder). Pages 91-92 of Part 2 in Scudder, Canadian fossil insects, myriapods and arachinids, appendix. Geological Survey of Canada, Ottawa 1900:91-92, illus.