American anatomist, naturalist, and palaeontologist. Demonstrator of anatomy, Franklin Medical College, 1846. Visited Europe in 1848 and 1850. Professor of anatomy, University of Pennsylvania, 1853–91. President of the Academy of Natural Sciences of Philadelphia, 1881–91. Published extensively on the fossil remains of extinct vertebrates of North America.
Sources: DAB DSB
(See the bibliography for full references to sources)