College of Charleston biology professor Gavin Naylor has received a $2.2 million grant from the National Science Foundation to study the evolution of sharks, rays and chimaeras.

Under the terms of the five-year research grant, Naylor will categorize the diversity of sharks, skates, rays and chimaeras; provide a genealogy of relationships based on DNA sequence comparisons; and provide a database of three-dimensional virtual skeletons to document all of the physical variations that characterize the major lineages.