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Poinar Jr., G. 1999. Paleochordodes protus n.g., n.sp. (Nematomorpha, Chordodidae), parasites of a fossil cockroach, with a critical examination of other fossil hairworms and helminths of extant cockroaches (Insecta, Blattaria). Invertebrate Biology 118 (2): 109-115. ≡