1. a New Mexico Museum of Natural History and Science , 1801 Mountain Rd, NW, Albuquerque , NM , 87104 , USA
2. b Division of Paleontology , American Museum of Natural History , New York , NY , 10024
3. c Department of Earth and Environmental Sciences , Columbia University , Palisades , NY , 10964 , USA
4. d Department of Biology , Carthage College , 2001 Alford Park Drive, Kenosha , WI , 53140 , USA
5. e Oklahoma State University Center for Health Sciences, Department of Anatomy and Cell Biology , 1111 West 17th St., Tulsa , OK , 74107-1898 , USA
6. f 14700 FM 307 , Stanton , TX , 79782 , USA