Collin, R. 2005. Crepidula badisparsa sp. nov. (Gastropoda: Calyptraeidae) from Bocas del Toro Province, Panama. Caribbean Journal of Science. 41(2): 269-276.

Cipriani, R. and R. Collin. 2005. Life-history Invariants with Bounded Variables Cannot be Distinguished from Data Generated by Random Processes Using Standard Analyses. Journal of Evolutionary Biology. 18(6): 1613-1618.

Collin, R. 2006. SEX RATIO, LIFE-HISTORY INVARIANTS, AND PATTERNS OF SEX CHANGE IN A FAMILY OF PROTANDROUS GASTROPODS
Evolution, 60: 735-745.

Collin, Rachel, Wonham, M. and Barr, Kelly R. 2006. <i>Crepidula convexa</i> Say 1822 (Caenogastropoda: Calyptraeidae) in Washington State, USA. American Malacological Bulletin, 21: 113-116.

Collin, R. and J. B. Wise. 1997. Morphology and development of Odostomia columbiana (Gastropoda: Pyramidellidae). Biological Bulletin. 192: 243-252.

Collin, R. 1997. Hydrophobic larval shells: another character for higher level systematics of gastropods. Journal of Molluscan Studies. 63: 425-430.

Collin, R. and C. M. Janis. 1997. Phylogenetic constraints on feeding adaptations: Why there were no suspension- feeding marine reptiles? E. Nichols and J. Calloway eds. Ancient Marine Reptiles. Society of Vertebrate Paleontology symposium on Mesozoic marine reptiles. Academic Press.

Collin, R. and J. Voltzow. 1998. Initiation, calcification, and form of larval "archaeogastropod" shells. Journal of Morphology. 235(1): 77-89.

Collin, R. 2000. The development of three Californian heterobranch mollusks from California, USA.
The Nautilus. 114(3): 117-119.

Collin, R. 2000. Sex change, reproduction and development of Crepidula adunca and C. lingulata (Gastropoda: Calyptraeidae) The Veliger. 43: 24-33.