B. C.  Ratcliffe, ?New species of Coprini (Coleoptera: Scarabaeidae: Scarabaeinae) taken from the pelage of three toed sloths (Bradypus tridactylus L.) (Edentata: Bradypodidae) in Central amazonia with a brief commentary on scarab-sloth relationships?, The Coleopterists Bulletin, vol. 34, pp. 337-350, 1980.

B. C.  Ratcliffe, ?Trox hamatus Robinson (Troginae) using a Canthon (Scarabaeinae) brood ball and new records of North American Trox (Coleoptera: Scarabaeidae)?, Transactions of the Nebraska Academy of Sciences, vol. XI, pp. 53-55, 1983.

B. C.  Ratcliffe, ?A new species of Aphodius (Coleoptera: Scarabaeidae: Aphodiinae) from Nebraska?, Transactions of the Nebraska Academy of Sciences, vol. XVI, pp. 87-89, 1988.

B. C.  Ratcliffe, ?An unusual new unicorn species of Copris from Nicaragua (Scarabaeidae: Scarabaeinae, Coprini)?, The Coleopterists Bulletin, vol. 52, pp. 93-96, 1998.

B. C.  Ratcliffe and Smith, A. B. T., ?New species of Canthonella Chapin (Scarabaeidae: Scarabaeinae) from Amazonian Brasil?, The Coleopterists Bulletin, vol. 53, pp. 1-7, 1999.