Le Miocene superieur du sud de la depression de l'Afar, Ethiopie; sediments, faunes, ages isotopiques

Tiercelin, Jean-Jacques; Michaux, J.; Bandet, Y.

doi:10.2113/gssgfbull.s7-xxi.3.255

Cited by 24 publications

(8 citation statements)

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“…At the Chorora Fm TL, rhyolitic ignimbrites were reported to both over-and underlie the sedimentary sequence that contains the TL main vertebrate fossil-bearing unit (Sickenberg and Schönfeld, 1975;Tiercelin et al, 1979;Geraads et al, 2002). Repeated prior investigations of the (supposedly) overlying ignimbrites converged to a ~10.0 Ma K-Ar age .…”

Section: Geological and Chronological Backgroundmentioning

confidence: 99%

“…Chorora TL fauna (~8.5 Ma) Geraads et al (2002) reported on the combined 1970s (Sickenberg and Schönfeld, 1975;Tiercelin et al, 1979) and 1990s Chorora TL fossil collection. They recorded ten mammalian taxa (not including rodents) identifiable to the genus or tribe levels, including an early form of Stegotetrabelodon (Proboscidea), a large hipparionin equid, a dicerotin rhinoceros (now considered Ceratotherium, see below), a chalicothere attributed to Ancylotherium, a small boselaphin bovid, a large giraffid probably sivathere, a hippopotamid perhaps Kenyapotamus, and a machairodontine felid (Table 1).…”

Section: Fossil Assemblage Descriptionsmentioning

confidence: 99%

“…This fossil assemblage was considered to be ~10.5 Ma, although Geraads et al (2002) noted that aspects of the TL fauna suggest a somewhat more recent age. The latter observation was based largely on the Stegotetrabelodon evidence (initially presented by Coppens and Tassy in Tiercelin et al, 1979), which Geraads et al (2002) considered more derived than the ~9.6 Ma Tetralophodon from Samburu Hills (Nakaya et al, 1987). Although the Chorora TL fauna has been long considered to date between 10 and 11 Ma (see above), our revised geochronology indicates a younger ~8.5 Ma age.…”

Section: Fossil Assemblage Descriptionsmentioning

confidence: 99%

“…A small but important early Late Miocene vertebrate fossil assemblage has been known since the 1970s from what has been called the 'type locality' of the Chorora Fm (Sickenberg and Schönfeld, 1975;Tiercelin et al, 1979;Geraads et al, 2002). The age of this assemblage has been widely considered to be ~10.5 Ma Winkler, 2002;Bernor et al, 2004;Cote, 2004;Suwa et al, 2007;Werdelin and Sanders, 2010;Melcher et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Newly discovered cercopithecid, equid and other mammalian fossils from the Chorora Formation, Ethiopia

Suwa

Beyene

Nakaya

et al. 2015

Anthropological Science

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The vertebrate fossil localities of the Chorora Formation, Ethiopia, comprise one of only a few sub-Saharan African paleontological research areas that illuminate Late Miocene African mammalian and primate evolution. Field work at Chorora since 2007 has resulted in the establishment of new vertebrate fossil localities and a revised chronostratigraphic framework. The new Chorora Formation fossils include the earliest known records of Cercopithecinae, Hippopotaminae, and Leporidae in Africa. Two lineages of hipparionins are recognized at Chorora, a larger and smaller morph, forming potential phyletic links between the earlier Samburu Hills hipparionins and later Eurygnathohippus turkanensis and E. feibeli from Lothagam, Kenya. The Chorora colobines are larger than the >9 Ma Microcolobus and morphologically conservative with only moderate molar cusp notches. The Chorora cercopithecines represent the earliest documented occurrence of the subfamily.

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Section: Geological and Chronological Backgroundmentioning

confidence: 99%

Section: Fossil Assemblage Descriptionsmentioning

confidence: 99%

Section: Fossil Assemblage Descriptionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Newly discovered cercopithecid, equid and other mammalian fossils from the Chorora Formation, Ethiopia

Suwa

Beyene

Nakaya

et al. 2015

Anthropological Science

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“…It is an incomplete maxilla with P4‐M2 (Jaeger et al ., 1980: fig. 1a) from the Upper Miocene of Ch’orora, Ethiopia (Tiercelin, Michaux & Bandet, 1979; Jaeger et al ., 1980). Additional material was found later in the same locality (Geraads, 1998, 2001: 104) (Fig.…”

Section: Revision Of Fossil Thryonomyidsmentioning

confidence: 99%

Systematics and phylogeny of the cane rats (Rodentia: Thryonomyidae)

López‐Antoñanzas¹,

Şen²,

Mein³

2004

Zoological Journal of the Linnean Society

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The family Thryonomyidae is known from the Eocene up to the present. Today, this group comprises just two closely related species, which are restricted to sub‐Saharan Africa. However, various thryonomyids have been recorded in strata of Miocene age, when the group spread out of Africa eastward to southern Asia (Pakistan). A systematic revision and a cladistic analysis shows that 20 species can be referred to this family: Thryonomys swinderianus (Temninck), T. gregorianus (Thomas), Paraphiomys pigotti Andrews, P. occidentalis Lavocat, P. simonsi Wood, P. hopwoodi Lavocat, P. shipmani Denys et Jaeger, P. australis Mein, Pickford et Senut, P. roessneri Mein, Pickford et Senut, P. afarensis Geraads, Paraphiomys sp. nov. from Saudi Arabia López‐Antoñanzas et Sen, P. renelavocati sp. nov., Neosciuromys africanus Stromer, Apodecter stromeri Hopwood, Paraulacodus indicus Hinton, Paraulacodus johanesi Jaeger, Michaux et Sabatier, Gaudeamus aegyptius Wood, Epiphiomys coryndoni Lavocat, Kochalia geespei (de Bruijn et Hussain), Paraphiomys sp. nov. from Saudi Arabia, and Paraphiomys orangeus Mein et Pickford. The unresolved basal position of Sacaresia moyaeponsi with respect to Metaphiomys schaubi and the clade comprising the above‐cited species, suggest that this taxon should not be allocated to the family Thryonomyidae. A phylogenetic definition of the family Thryonomyidae is proposed as an outcome of the phylogenetic analysis: Epiphiomys corindoni, Thryonomys swinderianus, their most recent common ancestor and all its descendants (node‐based taxon). © 2004 The Linnean Society of London, Zoological Journal of the Linnean Society, 2004, 142, 423–444.

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Neogene paleobiogeography and East African paleoenvironments: contributions from the Tugen Hills rodents and lagomorphs

Winkler

2002

Journal of Human Evolution

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Le Miocene superieur du sud de la depression de l'Afar, Ethiopie; sediments, faunes, ages isotopiques

Cited by 24 publications

References 0 publications

Newly discovered cercopithecid, equid and other mammalian fossils from the Chorora Formation, Ethiopia

Newly discovered cercopithecid, equid and other mammalian fossils from the Chorora Formation, Ethiopia

Systematics and phylogeny of the cane rats (Rodentia: Thryonomyidae)

Neogene paleobiogeography and East African paleoenvironments: contributions from the Tugen Hills rodents and lagomorphs

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