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Fossil evidence for an ancient divergence of lorises and galagos
The first demonstrable crown strepsirrhines from the Afro-Arabian Palaeogene are described—a galagid and a possible lorisid from the late middle Eocene of Egypt, the latter of which provides the earliest fossil evidence for the distinctive strepsIRrhine toothcomb.
Basal Anthropoids from Egypt and the Antiquity of Africa's Higher Primate Radiation
Biretia is unique among early anthropoids in exhibiting evidence for nocturnality, but derived dental features shared with younger parapithecids draw this genus, and possibly >45-million-year-old Algeripithecus, into a morphologically and behaviorally diverse parapithecoid clade of great antiquity.
A new estimate of afrotherian phylogeny based on simultaneous analysis of genomic, morphological, and fossil evidence
- E. Seiffert
- BiologyBMC Evolutionary Biology
- 13 November 2007
There may, nevertheless, be more morphological character support for crown Afrotheria than is currently assumed; the features identified here as possible afrotherian synapomorphies can be further scrutinized through future phylogenetic analyses with broader taxon sampling, as well as recovery of primitive fossil afroTherians from the Afro-Arabian landmass.
Revised age estimates for the later Paleogene mammal faunas of Egypt and Oman.
- E. Seiffert
- Geography, Environmental ScienceProceedings of the National Academy of Sciences…
- 28 March 2006
The Jebel Qatrani Formation of northern Egypt has produced Afro-Arabia's primary record of Paleogene mammalian evolution, including the world's most complete remains of early anthropoid primates.…
Palaeontological evidence for an Oligocene divergence between Old World monkeys and apes
The oldest known fossil ‘ape’ is described, represented by a partial mandible preserving dental features that place it with ‘nyanzapithecine’ stem hominoids, and the oldest stem member of the Old World monkey clade is reported, representing by a lower third molar.
Anthracobunids from the Middle Eocene of India and Pakistan Are Stem Perissodactyls
Analyses of stable isotopes and long bone geometry together suggest that most anthracobunids fed on land, but spent a considerable amount of time near water, which expands the understanding of stem perissodactyl diversity and sheds new light on perissODactyl origins.
Craniodental Morphology and Systematics of a New Family of Hystricognathous Rodents (Gaudeamuridae) from the Late Eocene and Early Oligocene of Egypt
The oldest known remains of Gaudeamus are described, including largely complete but crushed crania and complete upper and lower dentitions, and Gaudeamurids are the only known crown hystricognaths from Afro-Arabia that are likely to be aligned with non-phiomorph members of that clade, and as such provide additional support for an Afro -Arabian origin of advanced stem and basal crown members of Hysticognathi.
New Bats (Mammalia: Chiroptera) from the Late Eocene and Early Oligocene, Fayum Depression, Egypt
Four new genera and six new species of microchiropteran bats are described here from the late Eocene (37–34 Ma) of the Fayum Depression in northern Egypt, including the first and only African record of a fossil rhinopomatid and the earliest African records of megadermatids, emballonurids, and vespertilionids.
Oligocene mammals from Ethiopia and faunal exchange between Afro-Arabia and Eurasia
A late Oligocene fossil assemblage from Ethiopia is reported, which constrains the migration to postdate 27 Myr ago, and yields new insight into the indigenous faunal dynamics that preceded this event.
Fossil and molecular evidence constrain scenarios for the early evolutionary and biogeographic history of hystricognathous rodents
- H. Sallam, E. Seiffert, M. Steiper, E. Simons
- Biology, GeographyProceedings of the National Academy of Sciences
- 29 September 2009
The oldest well-dated hystricognathous rodents from an earliest late Eocene (≈37 Ma) fossil locality in the Fayum Depression of northern Egypt are described and molecular dating suggests that the split between Hystricidae and the phiomorphic-caviomorph clade occurred ≈39 Ma, and that phiomorphs and caviomorphs diverged ≈36 Ma.