I am interested in the history, general biology, and behavior of living and extinct primates. My primary research concerns focus on the early evolution of anthropoids based on craniodental and postcranial remains that have recently been discovered in the late Eocene and early Oligocene sites of the Fayum Depression, Egypt; the paleoecology, dating, taphonomy, anatomy, and relationships of extinct placentals from these sites; dating, extinctions, anatomy, and relationships of giant subfossil lemurs of Madagascar; behavioral and conservation studies of extant Malagasy lemurs; the evolutionary history and relationships of middle and late Tertiary apes, as well as Plio-Pleistocene hominids. I have conducted paleontological fieldwork in India, Egypt, Iran, Libya, Spain, Madagascar, and the western United States, and have ongoing field projects in the Paleogene of Egypt, the Miocene of India, the subfossil sites of Madagascar, and the Eocene of Wyoming.    WEB PAGE

Seiffert E.R., Simons E.L., & Attia Y. (2003) Fossil evidence for an ancient divergence of lorises and galagos. Nature 422: 421-424. PDF

Simons E.L. (2001) The cranium of Parapithecus grangeri, an Egyptian Oligocene anthropoidean primate. Proc. Natl. Acad. Sci., U.S.A. 98: 7892-7897.

Simons E.L., Seiffert E.R., Chatrath P.S., & Attia Y. (2001) Earliest record of a parapithecid anthropoid from the Jebel Qatrani Formation, northern Egypt. Folia Primatol. 72: 316-331.

Seiffert E.R. & Simons E.L. (2001) Astragalar morphology of late Eocene anthropoids from the Fayum Depression (Egypt) and the origin of catarrhine primates. J. Hum. Evol. 41: 577-605.

Seiffert E.R., Simons E.L., & Fleagle J.G. (2000) Anthropoid humeri from the late Eocene of Egypt. Proc. Natl. Acad. Sci., U.S.A. 97: 10062-10067.

Simons E.L. & Seiffert E.R. (1999) A partial skeleton of Proteopithecus sylviae (Primates, Anthropoidea): First associated dental and postcranial remains of an Eocene anthropoidean. C. R. Acad. Sci. II 329: 921-927.

Simons E.L., Plavcan J.M., & Fleagle J.G. (1999) Canine sexual dimorphism in Egyptian Eocene anthropoid primates: Catopithecus and Proteopithecus. Proc. Natl. Acad. Sci., U.S.A. 96: 2559-2562.

Simons E.L. (1998) The prosimian fauna of the Fayum Eocene/Oligocene deposits of Egypt. Folia Primatol. 69: (Suppl. 1): 286-294.

Simons E.L. (1997) Preliminary description of the cranium of Proteopithecus sylviae, an Egyptian late Eocene anthropoidean primate. Proc. Natl. Acad. Sci., U.S.A. 94: 14970-14975.

Simons E.L. & Rasmussen D.T. (1996) Skull of Catopithecus browni, an early Tertiary catarrhine. Am. J. Phys. Anthropol. 100: 261-292.

Wunderlich R.E., Simons E.L., & Jungers W.L. (1996) New pedal remains of Megaladapis and their functional significance. Am. J. Phys. Anthropol. 100: 115-138.