author
Known for co-authoring a major reference work on mammal classification, this American paleontologist has been associated with the American Museum of Natural History. Her work is especially notable for helping map the relationships of living and extinct mammals.
Susan K. Bell is an American paleontologist. Reliable sources available here identify her as a Resident Research Associate at the American Museum of Natural History and as the co-author, with Malcolm C. McKenna, of Classification of Mammals: Above the Species Level.
That book is widely described by its publisher as a comprehensive reference on mammal systematics, relationships, and occurrences, covering both living and extinct taxa down to the rank of genus. Bell's name is closely tied to that long-lasting scholarly contribution.
Public biographical detail appears limited in the sources I could confirm, so this overview focuses on the parts that are clearly supported: her museum affiliation and her important collaborative work in vertebrate paleontology and mammalian classification.