Erik R. Seiffert, PhD

Title(s)Chair and Professor of Clinical Integrative Anatomical Sciences
SchoolKeck School of Medicine of Usc
AddressBMT 406, 1333 San Pablo Street
Health Sciences Campus
Los Angeles CA 90033
Phone+1 323 442 0459
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    Collapse Biography 
    Collapse Education and Training
    Duke University, Durham, North CarolinaPhD12/2003Biological Anthropology & Anatomy
    University of California, Berkeley, Berkeley, CaliforniaB.A.12/1995Anthropology
    University of Texas at Austin, Austin, TexasM.A.12/1998Anthropology
    Collapse Awards and Honors
    2016Robert W. Sussman Award for Scientific Contributions to Anthropology (AAAS)

    Collapse Overview 
    Collapse Overview
    Mammalian evolution; combined Bayesian phylogenetic analysis of molecular and morphological data; detection of long-term evolutionary patterns in mammalian anatomy

    Collapse Bibliographic 
    Collapse Publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. A diminutive new basilosaurid whale reveals the trajectory of the cetacean life histories during the Eocene. Commun Biol. 2023 08 10; 6(1):707. Antar MS, Gohar AS, El-Desouky H, Seiffert ER, El-Sayed S, Claxton AG, Sallam HM. PMID: 37563270; PMCID: PMC10415296.
      View in: PubMed   Mentions: 2  Translation:Animals
    2. Total evidence time-scaled phylogenetic and biogeographic models for the evolution of sea cows (Sirenia, Afrotheria). PeerJ. 2022; 10:e13886. Heritage S, Seiffert ER. PMID: 36042864; PMCID: PMC9420408.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    3. New phiocricetomyine rodents (Hystricognathi) from the Jebel Qatrani Formation, Fayum Depression, Egypt. PeerJ. 2021; 9:e12074. Al-Ashqar SF, Seiffert ER, de Vries D, El-Sayed S, Antar MS, Sallam HM. PMID: 34721955; PMCID: PMC8533026.
      View in: PubMed   Mentions:    Fields:    
    4. Widespread loss of mammalian lineage and dietary diversity in the early Oligocene of Afro-Arabia. Commun Biol. 2021 10 07; 4(1):1172. de Vries D, Heritage S, Borths MR, Sallam HM, Seiffert ER. PMID: 34621013; PMCID: PMC8497553.
      View in: PubMed   Mentions: 5  Translation:Animals
    5. An Early Oligocene age for the oldest known monkeys and rodents of South America. Proc Natl Acad Sci U S A. 2021 09 14; 118(37). Campbell KE, O'Sullivan PB, Fleagle JG, de Vries D, Seiffert ER. PMID: 34493667; PMCID: PMC8449332.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    6. A new protocetid whale offers clues to biogeography and feeding ecology in early cetacean evolution. Proc Biol Sci. 2021 08 25; 288(1957):20211368. Gohar AS, Antar MS, Boessenecker RW, Sabry DA, El-Sayed S, Seiffert ER, Zalmout IS, Sallam HM. PMID: 34428967; PMCID: PMC8385364.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    7. Dinosaur remains from the Late Cretaceous (Campanian) of the Western Desert, Egypt. Cretaceous Research. 2021; 123:104783. Salem BS, O’Connor PM, Gorscak E, El-Sayed S, Sertich JWW, Seiffert ER, Sallam HM.
    8. Oldest record of African Bagridae and evidence from catfishes for a marine influence in the late Eocene Birket Qarun Locality 2 (BQ-2), Fayum Depression, Egypt. J. Vert. Paleo. 2020; (e1780248). El-Sayed S, Murray AM, Kora MA, Abu el-Kheir GA, Antar MS, Seiffert ER, Sallam HM.
    9. Revision of Oligocene “Paraphiomys” and an origin for crown Thryonomyoidea (Rodentia, Hystricognathi, Phiomorpha) near the Oligocene-Miocene boundary in Africa. Zool. J. Linn. Soc. 2020; 190:352-371. Sallam HM, Seiffert ER (2020) . Zoological Journal of the Linnean Society 190: 352-371.
    10. A parapithecid stem anthropoid of African origin in the Paleogene of South America. Science. 2020 04 10; 368(6487):194-197. Seiffert ER, Tejedor MF, Fleagle JG, Novo NM, Cornejo FM, Bond M, de Vries D, Campbell KE. PMID: 32273470.
      View in: PubMed   Mentions: 13     Fields:    Translation:Animals
    11. New crocodylomorph material from the Fayum Depression, Egypt, including the first occurrence of a sebecosuchian in African late Eocene deposits. J. Vert. Paleo. 2020; e1729781. Stefanic C, Nestler J, Seiffert ER, Turner A.
    12. Early anthropoid femora reveal divergent adaptive trajectories in catarrhine hind-limb evolution. Nat Commun. 2019 11 08; 10(1):4778. Almécija S, Tallman M, Sallam HM, Fleagle JG, Hammond AS, Seiffert ER. PMID: 31699998; PMCID: PMC6838095.
      View in: PubMed   Mentions: 1     Fields:    Translation:HumansAnimals
    13. Vertical support use and primate origins. Sci Rep. 2019 08 26; 9(1):12341. Yapuncich GS, Feng HJ, Dunn RH, Seiffert ER, Boyer DM. PMID: 31451739; PMCID: PMC6710261.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    14. An enigmatic crocodyliform from the Upper Cretaceous Quseir Formation, central Egypt. Cretaceous Research. 2018; 90:174-184. Saber S, Sertich JJW, Sallam HM, Ouda KA, O’Connor PM, Seiffert ER.
    15. Fossil lemurs from Egypt and Kenya suggest an African origin for Madagascar's aye-aye. Nat Commun. 2018 08 21; 9(1):3193. Gunnell GF, Boyer DM, Friscia AR, Heritage S, Manthi FK, Miller ER, Sallam HM, Simmons NB, Stevens NJ, Seiffert ER. PMID: 30131571; PMCID: PMC6104046.
      View in: PubMed   Mentions: 18     Fields:    Translation:Animals
    16. New Egyptian sauropod reveals Late Cretaceous dinosaur dispersal between Europe and Africa. Nat Ecol Evol. 2018 03; 2(3):445-451. Sallam HM, Gorscak E, O'Connor PM, El-Dawoudi IA, El-Sayed S, Saber S, Kora MA, Sertich JJW, Seiffert ER, Lamanna MC. PMID: 29379183.
      View in: PubMed   Mentions: 11     Fields:    Translation:Animals
    17. Dental eruption and growth in Hyracoidea. J Vert Paleo. 2017; e1317638. Asher RJ, Gunnell GF, Seiffert ER, Pattinson D, Tabuce R, Hautier L, Sallam HM.
    18. Craniodental and humeral morphology of a new species of Masrasector (Teratodontinae, Hyaenodonta, Placentalia) from the late Eocene of Egypt and locomotor diversity in hyaenodonts. PLoS One. 2017; 12(4):e0173527. Borths MR, Seiffert ER. PMID: 28422967; PMCID: PMC5396875.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    19. Quantification of the position and depth of the flexor hallucis longus groove in euarchontans, with implications for the evolution of primate positional behavior. Am J Phys Anthropol. 2017 06; 163(2):367-406. Yapuncich GS, Seiffert ER, Boyer DM. PMID: 28345775.
      View in: PubMed   Mentions: 2     Fields:    Translation:HumansAnimals
    20. A new genus and species of marine catfishes (Siluriformes; Ariidae) from the upper Eocene Birket Qarun Formation, Wadi El-Hitan, Egypt. PLoS One. 2017; 12(3):e0172409. El-Sayed SE, Kora MA, Sallam HM, Claeson KM, Seiffert ER, Antar MS. PMID: 28248973; PMCID: PMC5332075.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    21. Hyainailourine and teratodontine cranial material from the late Eocene of Egypt and the application of parsimony and Bayesian methods to the phylogeny and biogeography of Hyaenodonta (Placentalia, Mammalia). PeerJ. 2016; 4:e2639. Borths MR, Holroyd PA, Seiffert ER. PMID: 27867761; PMCID: PMC5111901.
      View in: PubMed   Mentions: 5     Fields:    
    22. Ancient phylogenetic divergence of the enigmatic African rodent Zenkerella and the origin of anomalurid gliding. PeerJ. 2016; 4:e2320. Heritage S, Fernández D, Sallam HM, Cronin DT, Esara Echube JM, Seiffert ER. PMID: 27602286; PMCID: PMC4991859.
      View in: PubMed   Mentions: 5     Fields:    
    23. Internal carotid arterial canal size and scaling in Euarchonta: Re-assessing implications for arterial patency and phylogenetic relationships in early fossil primates. J Hum Evol. 2016 08; 97:123-44. Boyer DM, Kirk EC, Silcox MT, Gunnell GF, Gilbert CC, Yapuncich GS, Allen KL, Welch E, Bloch JI, Gonzales LA, Kay RF, Seiffert ER. PMID: 27457550.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    24. New phiomorph rodents from the latest Eocene of Egypt, and the impact of Bayesian "clock"-based phylogenetic methods on estimates of basal hystricognath relationships and biochronology. PeerJ. 2016; 4:e1717. Sallam HM, Seiffert ER. PMID: 26966657; PMCID: PMC4782727.
      View in: PubMed   Mentions: 11     Fields:    
    25. Astragalar and calcaneal morphology of the middle Eocene primate Anchomomys frontanyensis (Anchomomyini): Implications for early primate evolution. J Hum Evol. 2016 Feb; 91:122-43. Marigó J, Roig I, Seiffert ER, Moyà-Solà S, Boyer DM. PMID: 26852816.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    26. Primate tarsal bones from Egerkingen, Switzerland, attributable to the middle Eocene adapiform Caenopithecus lemuroides. PeerJ. 2015; 3:e1036. Seiffert ER, Costeur L, Boyer DM. PMID: 26131376; PMCID: PMC4485257.
      View in: PubMed   Mentions: 5     Fields:    
    27. Evolution of postural diversity in primates as reflected by the size and shape of the medial tibial facet of the talus. Am J Phys Anthropol. 2015 May; 157(1):134-77. Boyer DM, Yapuncich GS, Butler JE, Dunn RH, Seiffert ER. PMID: 25682740.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    28. First cranial remains of a gondwanatherian mammal reveal remarkable mosaicism. Nature. 2014 Nov 27; 515(7528):512-7. Krause DW, Hoffmann S, Wible JR, Kirk EC, Schultz JA, von Koenigswald W, Groenke JR, Rossie JB, O'Connor PM, Seiffert ER, Dumont ER, Holloway WL, Rogers RR, Rahantarisoa LJ, Kemp AD, Andriamialison H. PMID: 25383528.
      View in: PubMed   Mentions: 30     Fields:    Translation:Animals
    29. Anthracobunids from the middle eocene of India and pakistan are stem perissodactyls. PLoS One. 2014; 9(10):e109232. Cooper LN, Seiffert ER, Clementz M, Madar SI, Bajpai S, Hussain ST, Thewissen JG. PMID: 25295875; PMCID: PMC4189980.
      View in: PubMed   Mentions: 16     Fields:    Translation:Animals
    30. New Myzopodidae (Chiroptera) from the late Paleogene of Egypt: emended family diagnosis and biogeographic origins of Noctilionoidea. PLoS One. 2014; 9(2):e86712. Gunnell GF, Simmons NB, Seiffert ER. PMID: 24504061; PMCID: PMC3913578.
      View in: PubMed   Mentions: 6     Fields:    Translation:Animals
    31. Evolution and allometry of calcaneal elongation in living and extinct primates. PLoS One. 2013; 8(7):e67792. Boyer DM, Seiffert ER, Gladman JT, Bloch JI. PMID: 23844094; PMCID: PMC3701013.
      View in: PubMed   Mentions: 11     Fields:    Translation:Animals
    32. A calcaneus attributable to the primitive late Eocene anthropoid Proteopithecus sylviae: phenetic affinities and phylogenetic implications. Am J Phys Anthropol. 2013 Jul; 151(3):372-97. Gladman JT, Boyer DM, Simons EL, Seiffert ER. PMID: 23794332.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    33. Patterns of astragalar fibular facet orientation in extant and fossil primates and their evolutionary implications. Am J Phys Anthropol. 2013 Jul; 151(3):420-47. Boyer DM, Seiffert ER. PMID: 23794333.
      View in: PubMed   Mentions: 10     Fields:    Translation:Animals
    34. Palaeontological evidence for an Oligocene divergence between Old World monkeys and apes. Nature. 2013 May 30; 497(7451):611-4. Stevens NJ, Seiffert ER, O'Connor PM, Roberts EM, Schmitz MD, Krause C, Gorscak E, Ngasala S, Hieronymus TL, Temu J. PMID: 23676680.
      View in: PubMed   Mentions: 42     Fields:    Translation:Animals
    35. Last of the oligopithecids? A dwarf species from the youngest primate-bearing level of the Jebel Qatrani Formation, northern Egypt. J Hum Evol. 2013 Mar; 64(3):211-5. Seiffert ER, Simons EL. PMID: 23416038.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    36. Early primate evolution in Afro-Arabia. Evol Anthropol. 2012 Nov; 21(6):239-53. Seiffert ER. PMID: 23280921.
      View in: PubMed   Mentions: 15     Fields:    Translation:Animals
    37. Evolution of locomotion in Anthropoidea: the semicircular canal evidence. Proc Biol Sci. 2012 Sep 07; 279(1742):3467-75. Ryan TM, Silcox MT, Walker A, Mao X, Begun DR, Benefit BR, Gingerich PD, Köhler M, Kordos L, McCrossin ML, Moyà-Solà S, Sanders WJ, Seiffert ER, Simons E, Zalmout IS, Spoor F. PMID: 22696520; PMCID: PMC3396915.
      View in: PubMed   Mentions: 22     Fields:    Translation:Animals
    38. New primate first metatarsals from the Paleogene of Egypt and the origin of the anthropoid big toe. J Hum Evol. 2012 Jul; 63(1):99-120. Patel BA, Seiffert ER, Boyer DM, Jacobs RL, St Clair EM, Simons EL. PMID: 22694838.
      View in: PubMed   Mentions: 3     Fields:    Translation:Animals
    39. Evidence for a convergent slowdown in primate molecular rates and its implications for the timing of early primate evolution. Proc Natl Acad Sci U S A. 2012 Apr 17; 109(16):6006-11. Steiper ME, Seiffert ER. PMID: 22474376; PMCID: PMC3341044.
      View in: PubMed   Mentions: 34     Fields:    Translation:Animals
    40. Diversity in the later Paleogene proboscidean radiation: a small barytheriid from the Oligocene of Dhofar Governorate, Sultanate of Oman. Naturwissenschaften. 2012 Feb; 99(2):133-41. Seiffert ER, Nasir S, Al-Harthy A, Groenke JR, Kraatz BP, Stevens NJ, Al-Sayigh AR. PMID: 22230880.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    41. A radiation of arboreal basal eutherian mammals beginning in the Late Cretaceous of India. Proc Natl Acad Sci U S A. 2011 Sep 27; 108(39):16333-8. Goswami A, Prasad GV, Upchurch P, Boyer DM, Seiffert ER, Verma O, Gheerbrant E, Flynn JJ. PMID: 21930906; PMCID: PMC3182738.
      View in: PubMed   Mentions: 24     Fields:    Translation:Animals
    42. Craniodental morphology and systematics of a new family of hystricognathous rodents (Gaudeamuridae) from the late eocene and early oligocene of Egypt. PLoS One. 2011 Feb 22; 6(2):e16525. Sallam HM, Seiffert ER, Simons EL. PMID: 21364934; PMCID: PMC3043065.
      View in: PubMed   Mentions: 8     Fields:    Translation:Animals
    43. Astragalar morphology of Afradapis, a large adapiform primate from the earliest late Eocene of Egypt. Am J Phys Anthropol. 2010 Nov; 143(3):383-402. Boyer DM, Seiffert ER, Simons EL. PMID: 20949610.
      View in: PubMed   Mentions: 9     Fields:    Translation:Animals
    44. A fossil primate of uncertain affinities from the earliest late Eocene of Egypt. Proc Natl Acad Sci U S A. 2010 May 25; 107(21):9712-7. Seiffert ER, Simons EL, Boyer DM, Perry JM, Ryan TM, Sallam HM. PMID: 20457923; PMCID: PMC2906843.
      View in: PubMed   Mentions: 11     Fields:    Translation:Animals
    45. Convergent evolution of anthropoid-like adaptations in Eocene adapiform primates. Nature. 2009 Oct 22; 461(7267):1118-21. Seiffert ER, Perry JM, Simons EL, Boyer DM. PMID: 19847263.
      View in: PubMed   Mentions: 19     Fields:    Translation:Animals
    46. Fossil and molecular evidence constrain scenarios for the early evolutionary and biogeographic history of hystricognathous rodents. Proc Natl Acad Sci U S A. 2009 Sep 29; 106(39):16722-7. Sallam HM, Seiffert ER, Steiper ME, Simons EL. PMID: 19805363; PMCID: PMC2757825.
      View in: PubMed   Mentions: 21     Fields:    Translation:Animals
    47. Stable isotope evidence for an amphibious phase in early proboscidean evolution. Proc Natl Acad Sci U S A. 2008 Apr 15; 105(15):5786-91. Liu AG, Seiffert ER, Simons EL. PMID: 18413605; PMCID: PMC2311368.
      View in: PubMed   Mentions: 9     Fields:    Translation:Animals
    48. A new estimate of afrotherian phylogeny based on simultaneous analysis of genomic, morphological, and fossil evidence. BMC Evol Biol. 2007 Nov 13; 7:224. Seiffert ER. PMID: 17999766; PMCID: PMC2248600.
      View in: PubMed   Mentions: 30     Fields:    Translation:AnimalsCells
    49. Evolution and extinction of Afro-Arabian primates near the Eocene-Oligocene boundary. Folia Primatol (Basel). 2007; 78(5-6):314-27. Seiffert ER. PMID: 17855785.
      View in: PubMed   Mentions: 13     Fields:    Translation:Animals
    50. A remarkable female cranium of the early Oligocene anthropoid Aegyptopithecus zeuxis (Catarrhini, Propliopithecidae). Proc Natl Acad Sci U S A. 2007 May 22; 104(21):8731-6. Simons EL, Seiffert ER, Ryan TM, Attia Y. PMID: 17517628; PMCID: PMC1885571.
      View in: PubMed   Mentions: 11     Fields:    Translation:Animals
    51. Additional material of the enigmatic Early Miocene mammal Kelba and its relationship to the order Ptolemaiida. Proc Natl Acad Sci U S A. 2007 Mar 27; 104(13):5510-5. Cote S, Werdelin L, Seiffert ER, Barry JC. PMID: 17372202; PMCID: PMC1838468.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    52. Early evolution and biogeography of lorisiform strepsirrhines. Am J Primatol. 2007 Jan; 69(1):27-35. Seiffert ER. PMID: 17171668.
      View in: PubMed   Mentions: 9     Fields:    Translation:Animals
    53. Revised age estimates for the later Paleogene mammal faunas of Egypt and Oman. Proc Natl Acad Sci U S A. 2006 Mar 28; 103(13):5000-5. Seiffert ER. PMID: 16549773; PMCID: PMC1458784.
      View in: PubMed   Mentions: 23     Fields:    Translation:Animals
    54. Basal anthropoids from Egypt and the antiquity of Africa's higher primate radiation. Science. 2005 Oct 14; 310(5746):300-4. Seiffert ER, Simons EL, Clyde WC, Rossie JB, Attia Y, Bown TM, Chatrath P, Mathison ME. PMID: 16224019.
      View in: PubMed   Mentions: 28     Fields:    Translation:Animals
    55. Additional remains of Wadilemur elegans, a primitive stem galagid from the late Eocene of Egypt. Proc Natl Acad Sci U S A. 2005 Aug 09; 102(32):11396-401. Seiffert ER, Simons EL, Ryan TM, Attia Y. PMID: 16087891; PMCID: PMC1183603.
      View in: PubMed   Mentions: 14     Fields:    Translation:Animals
    56. Afrotherian origins and interrelationships: new views and future prospects. Curr Top Dev Biol. 2004; 63:37-60. Robinson TJ, Seiffert ER. PMID: 15536013.
      View in: PubMed   Mentions: 21     Fields:    Translation:Animals
    57. Oligocene mammals from Ethiopia and faunal exchange between Afro-Arabia and Eurasia. Nature. 2003 Dec 04; 426(6966):549-52. Kappelman J, Rasmussen DT, Sanders WJ, Feseha M, Bown T, Copeland P, Crabaugh J, Fleagle J, Glantz M, Gordon A, Jacobs B, Maga M, Muldoon K, Pan A, Pyne L, Richmond B, Ryan T, Seiffert ER, Sen S, Todd L, Wiemann MC, Winkler A. PMID: 14654838.
      View in: PubMed   Mentions: 21     Fields:    Translation:Animals
    58. Fossil evidence for an ancient divergence of lorises and galagos. Nature. 2003 Mar 27; 422(6930):421-4. Seiffert ER, Simons EL, Attia Y. PMID: 12660781.
      View in: PubMed   Mentions: 29     Fields:    Translation:Animals
    59. Astragalar morphology of late Eocene anthropoids from the Fayum Depression (Egypt) and the origin of catarrhine primates. J Hum Evol. 2001 Dec; 41(6):577-606. Seiffert ER, Simons EL. PMID: 11782110.
      View in: PubMed   Mentions: 11     Fields:    Translation:Animals
    60. Earliest record of a parapithecid anthropoid from the Jebel Qatrani formation, Northern Egypt. Folia Primatol (Basel). 2001 Nov-Dec; 72(6):316-31. Simons EL, Seiffert ER, Chatrath PS, Attia Y. PMID: 11964500.
      View in: PubMed   Mentions: 6     Fields:    Translation:Animals
    61. Morphometric variation in the hominoid orbital aperture: a case study with implications for the use of variable characters in Miocene catarrhine systematics. J Hum Evol. 2001 Apr; 40(4):301-18. Seiffert ER, Kappelman J. PMID: 11312583.
      View in: PubMed   Mentions: 1     Fields:    Translation:HumansAnimals
    62. Anthropoid humeri from the late Eocene of Egypt. Proc Natl Acad Sci U S A. 2000 Aug 29; 97(18):10062-7. Seiffert ER, Simons EL, Fleagle JG. PMID: 10963669; PMCID: PMC27687.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    63. Widanelfarasia, a diminutive placental from the late Eocene of Egypt. Proc Natl Acad Sci U S A. 2000 Mar 14; 97(6):2646-51. Seiffert ER, Simons EL. PMID: 10694573; PMCID: PMC15983.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
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