Phylogenetic studies published by Jack Garrick in 1982 and Leonard Compagno in 1988, based on morphology, placed the bignose shark in the "obscurus group" of Carcharhinus, centered on the dusky shark (C. obscurus) and the Galapagos shark (C. galapagensis).
He is the species authority for several types of sharks, including the New Zealand lanternshark.
The largetooth cookiecutter shark was originally described by Jack Garrick and Stewart Springer, in a 1964 issue of the scientific journal Copeia.
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