N.  Knowlton, ?Sexual Selection And Dimorphism In 2 Demes Of A Symbiotic, Pair-Bonding Snapping Shrimp?, Evolution, vol. 34, pp. 161-173, 1980.

N.  Knowlton and Keller, B. D., ?Symmetric fights as a measure of escalation potential in a symbiotic, territorial snapping shrimp?, Behavioral Ecology and Sociobiology, vol. 10, pp. 289-292, 1982.

N.  Knowlton, ?Cryptic and Sibling Species among the Decapod Crustacea?, Journal Of Crustacean Biology, vol. 6, pp. 356-363, 1986.

N.  Knowlton and Weight, L. A., ?Species of marine invertebrates: a comparison of the biological and phylogenetic species concepts?, in Species: the units of biodiversity, M. F.  Claridge, Dawah, H. A., and Wilson, M. R., Eds. London: Chapman and Hall, 1997, pp. 199-219.

N.  Knowlton, Weigt, L. A., Solorzano, L. A., Mills, D. K., and Bermingham, E., ?Divergence In Proteins, Mitochondrial-Dna, And Reproductive Compatibility Across The Isthmus Of Panama?, Science, vol. 260, pp. 1629-1632, 1993.

N.  Knowlton and Mills, D. K., ?The systematic importance of color and color pattern: evidence for complexes of sibling species of snapping shrimp (Caridea: Alpheidae: Alpheus) from the Caribbean and Pacific coasts of Panama?, Proceedings of the San Diego Society of Natural History, vol. 18, pp. 1-5, 1992.

N.  Knowlton and Weigt, L. A., ?New dates and new rates for divergence across the Isthmus of Panama?, Proceedings Of The Royal Society Of London Series B-Biological Sciences, vol. 265, pp. 2257-2263, 1998.

S. T.  Williams, Jara, J., Gomez, E., and Knowlton, N., ?The marine Indo-West Pacific break: contrasting the resolving power of mitochondrial and nuclear genes?, Integrative and Comparative Biology, vol. 42, pp. 941-952, 2002.

S. T.  Williams, Knowlton, N., Weigt, L. A., and Jara, J. A., ?Evidence for three major clades within the snapping shrimp genus Alpheus inferred from nuclear and mitochondrial gene sequence data?, Molecular Phylogenetics & Evolution, vol. 20, pp. 375-389, 2001.

S. T.  Williams and Knowlton, N., ?Mitochondrial pseudogenes are pervasive and often insidious in the snapping shrimp genus Alpheus?, Molecular Biology And Evolution, vol. 18, pp. 1484-1493, 2001.

A.  Anker, Hurt, C., and Knowlton, N., ?Revision of the Alpheus nuttingi (Schmitt) species complex (Crustacea : Decapoda : Alpheidae), with description of a new species from the tropical eastern Pacific?, Zootaxa, vol. 1577, pp. 41-60, 2007.

A.  Anker, Hurt, C., and Knowlton, N., ?Three transisthmian snapping shrimps (Crustacea : decapoda : alpheidae : Alpheus) associated with innkeeper worms (Echiura : Thalassematidae) in Panama?, Zootaxa, vol. 1626, pp. 1-23, 2007.

C.  Hurt, Anker, A., and Knowlton, N., ?A multilocus test of simultaneous divergence across the isthmus of Panama using snapping shrimp in the genus Alpheus?, Evolution, vol. 63, pp. 514-530, 2009.

A.  Anker, Hurt, C., and Knowlton, N., ?Description of cryptic taxa within the Alpheus bouvieri A. Milne-Edwards, 1878 and A. hebes Kim and Abele, 1988 species complexes (Crustacea: Decapoda: Alpheidae)?, Zootaxa, pp. 1-23, 2009.

A.  Anker, Hurt, C., and Knowlton, N., ?Revision of the Alpheus cristulifrons species complex (Crustacea : Decapoda : Alpheidae), with description of a new species from the tropical eastern Atlantic?, Journal Of The Marine Biological Association Of The United Kingdom, vol. 88, pp. 543-562, 2008.

N.  Knowlton, Anker, A., and Jara, J., ?Alpheid Shrimp Database?, 2008.

A.  Anker, Hurt, C., Jara, J. A., and Knowlton, N., ?Revision of the Alpheus cylindricus Kingsley, 1878 species complex (Crustacea: Decapoda: Alpheidae), with revalidation of A. vanderbilti Boone, 1930?, Zootaxa, vol. 1943, pp. 53-68, 2008.

A.  Anker, Hurt, C., and Knowlton, N., ?Revision of the Alpheus formosus Gibbes, 1850 complex, with redescription of A-formosus and description of a new species from the tropical western Atlantic (Crustacea : Decapoda : Alpheidae)?, Zootaxa, vol. 1707, pp. 1-22, 2008.

A.  Anker, Hurt, C., and Knowlton, N., ?Revision of the Alpheus websteri Kingsley, 1880 species complex (Crustacea : Decapoda : Alpheidae), with revalidation of A. arenensis (Chace, 1937)?, Zootaxa, vol. 1694, pp. 51-68, 2008.