Morphometric variation in the hominoid orbital aperture : a case study with implications for the use of variable characters in Miocene catarrhine systematics = Variation morphométrique dans l'orifice orbitaire du primate hominoïde : étude de cas avec implications dans le cadre de l'usage de caractères variables dans la systématique de la catarrhine au cours du MiocèneSEIFFERT, Erik R; KAPPELMAN, John.Journal of human evolution. 2001, Vol 40, Num 4, pp 301-318, issn 0047-2484Article

Evolution and extinction of afro-arabian primates near the eocene-oligocene boundarySEIFFERT, Erik R.Folia Primatologica. 2007, Vol 78, Num 5-6, pp 314-327, issn 0015-5713, 14 p.Article

Astragalar morphology of late Eocene anthropoids from the Fayum Depression (Egypt) and the origin of catarrhine primatesSEIFFERT, Erik R; SIMONS, Elwyn L.Journal of human evolution. 2001, Vol 41, Num 6, pp 577-606, issn 0047-2484, 30 p.Article

Fossil evidence for an ancient divergence of lorises and galagosSEIFFERT, Erik R; SIMONS, Elwyn L; ATTIA, Yousry et al.Nature (London). 2003, Vol 422, Num 6930, pp 421-424, issn 0028-0836, 4 p.Article

Astragalar Morphology of Afradapis, a Large Adapiform Primate From the Earliest Late Eocene of EgyptBOYER, Doug M; SEIFFERT, Erik R; SIMONS, Elwyn L et al.American journal of physical anthropology. 2010, Vol 143, Num 3, pp 383-402, issn 0002-9483, 20 p.Article

Convergent evolution of anthropoid-like adaptations in Eocene adapiform primatesSEIFFERT, Erik R; PERRY, Jonathan M. G; SIMONS, Elwyn L et al.Nature (London). 2009, Vol 461, Num 7267, pp 1118-1121, issn 0028-0836, 4 p.Article

Vampyravus orientalis Schlosser (Chiroptera) from the Early Oligocene (Rupelian), Fayum, Egypt - body mass, humeral morphology and affinitiesGUNNELL, Gregg F; WORSHAM, Sara R; SEIFFERT, Erik R et al.Acta chiropterologica. 2009, Vol 11, Num 2, pp 271-278, issn 1508-1109, 8 p.Article

Oligocene mammals from Ethiopia and faunal exchange between Afro-Arabia and EurasiaKAPPELMAN, John; RASMUSSEN, D. Tab; JACOBS, Bonnie et al.Nature (London). 2003, Vol 426, Num 6966, pp 549-552, issn 0028-0836, 4 p.Article

New primate first metatarsals from the Paleogene of Egypt and the origin of the anthropoid big toePATEL, Biren A; SEIFFERT, Erik R; BOYER, Doug M et al.Journal of human evolution. 2012, Vol 63, Num 1, pp 99-120, issn 0047-2484, 22 p.Article

Basal anthropoids from Egypt and the Antiquity of Africa's higher primate radiationSEIFFERT, Erik R; SIMONS, Elwyn L; CLYDE, William C et al.Science (Washington, D.C.). 2005, Vol 310, Num 5746, pp 300-304, issn 0036-8075, 5 p.Article

Earliest record of a parapithecid anthropoid from the Jebel Qatrani Formation, northern EgyptSIMONS, Elwyn L; SEIFFERT, Erik R; CHATRATH, Prithijit S et al.Folia Primatologica. 2001, Vol 72, Num 6, pp 316-331, issn 0015-5713Conference Paper