Perissodactyla (Rhinocerotidae and Equidae) from Kanapoi

Geraads, Denis

doi:10.1016/j.jhevol.2017.07.013

Cited by 9 publications

(11 citation statements)

References 16 publications

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“…Despite these potential sources of error, the D-statistics are congruent with the phylogenomic analyses in suggesting that gene flow and ILS occurred between the ancestors of the Diceroti and Rhinoceros species (Figures 2B and 2C). This gene flow may have been enabled by the Eurasian origin of both African species (Antoine et al, 2021;Geraads, 2005Geraads, , 2020. Our analyses also revealed an excess of shared derived alleles between the two extinct members of the DCS clade (Merck's and woolly rhinoceroses) and both representatives of Rhinoceros, suggesting gene flow between these two pairs of lineages.…”

Section: Gene Flow Among Speciessupporting

confidence: 50%

Ancient and modern genomes unravel the evolutionary history of the rhinoceros family

Liu

Westbury

Dussex

et al. 2021

Cell

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Section: Gene Flow Among Speciessupporting

confidence: 50%

Ancient and modern genomes unravel the evolutionary history of the rhinoceros family

Liu

Westbury

Dussex

et al. 2021

Cell

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“…Although grazing rhinoceros such as Teleoceras had already evolved during the Miocene, the stem lineage leading to modern African rhinoceros was a mixed-feeder, represented by the morphologically intermediate C. neumayri, which inhabited late Miocene southern Europe from the Balkans to Iran approximately 7-9 Ma (Zeuner 1934, Geraads 2005, Geraads and Spassov 2009. This stem lineage diverged in Africa into D. praecox and C. mauritanicum, the direct ancestors of black and white rhinoceros respectively (Geraads 2005, Geraads 2017). The earliest fossil appearance of D. praecox is at Kuseralee in the Middle Awash Valley of Ethiopia (Giaourtsakis et al 2009, Geraads 2017) and the Ceratotherium lineage at Langebaanweg in South Africa (Hooijer et al 1972, Geraads 2005, both sites dating to about 5.2 Ma.…”

Section: Introductionmentioning

confidence: 99%

Interspecific Gene Flow and the Evolution of Specialization in Black and White Rhinoceros

Moodley

Westbury

Russo

et al. 2020

Molecular Biology and Evolution

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Africa’s black (Diceros bicornis) and white (Ceratotherium simum) rhinoceros are closely related sister-taxa that evolved highly divergent obligate browsing and grazing feeding strategies. Although their precursor species D. praecox and C. mauritanicum appear in the fossil record ∼5.2 million years ago (Ma), by 4 Ma both were still mixed feeders, and were even spatio-temporally sympatric at several Pliocene sites in what is today Africa’s Rift Valley. Here, we ask whether or not D. praecox and C. mauritanicum were reproductively isolated when they came into Pliocene secondary contact. We sequenced and de novo assembled the first annotated black rhinoceros reference genome, and compared it with available genomes of other black and white rhinoceros. We show that ancestral gene flow between D. praecox and C. mauritanicum ceased sometime between 3.3 and 4.1 Ma, despite conventional methods for the detection of gene flow from whole genome data returning false positive signatures of recent interspecific migration due to incomplete lineage sorting. We propose that ongoing Pliocene genetic exchange, for up to 2 million years after initial divergence, could have potentially hindered the development of obligate feeding strategies until both species were fully reproductively isolated, but that the more severe and shifting palaeoclimate of the early Pleistocene was likely the ultimate driver of ecological specialisation in African rhinoceros.

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“…Systematics and nomenclature of Pliocene African rhinos long remained confused, but it is now clear that the ancestor of the modern C. simum, which has often been called C. praecox, should be called C. mauritanicum, as the species praecox is in fact a Diceros (Geraads, 2005(Geraads, , 2010(Geraads, , 2020. A few teeth and probably most of the rhino postcranials document this species at MLP.…”

Section: Ceratotherium Mauritanicum (Pomel 1888)mentioning

confidence: 99%

Plio‐Pleistocene mammals from Mille‐Logya, Ethiopia, and the post‐Hadar faunal change

Geraads¹,

Reed

Barr

et al. 2021

J Quaternary Science

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We describe the non-primate mammalian fauna from the late Pliocene to earliest Pleistocene deposits of Mille-Logya in the Lower Awash Valley, Ethiopia, dated to c. 2.9-2.4 Ma, and divided into three successive units: Gafura, Seraitu, and Uraitele. We identify 41 mammalian taxa (including rodents), the most diverse group being the Bovidae, with 17 taxa. While the Gafura assemblage still resembles those from the earlier Hadar Formation, the younger Seraitu assemblage documents a major turnover. While there is little change in the species present across this interval, the relative abundances of various taxa change dramatically, with suids being largely replaced by opencountry bovids (Alcelaphini and Antilopini). We interpret this faunal change as reflective of an environmental shift, contemporaneous with the replacement of Australopithecus afarensis by Homo in the area.

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Perissodactyla (Rhinocerotidae and Equidae) from Kanapoi

Cited by 9 publications

References 16 publications

Ancient and modern genomes unravel the evolutionary history of the rhinoceros family

Ancient and modern genomes unravel the evolutionary history of the rhinoceros family

Interspecific Gene Flow and the Evolution of Specialization in Black and White Rhinoceros

Plio‐Pleistocene mammals from Mille‐Logya, Ethiopia, and the post‐Hadar faunal change

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