(1)
Pfleger, M. O.; Grubbs, R. D.; Cotton, C. F.; Daly-Engel, T. S. Squalus clarkae Sp. nov., a New Dogfish Shark from the Northwest Atlantic and Gulf of Mexico, With Comments on the Squalus mitsukurii Species Complex. Zootaxa 2018, 4444, 101–119.