By Yohannes Haile-Selassie, Giday WoldeGabriel
The second one quantity in a chain devoted to fossil discoveries made within the Afar quarter of Ethiopia, this paintings comprises the definitive description of the geological context and paleoenvironment of the early hominid Ardipithecus kadabba. This examine via a global workforce describes center Awash overdue Miocene faunal assemblages recovered from sediments firmly dated to among 5.2 and 5.8 million years in the past. in comparison to different assemblages of comparable age, the center Awash list is extraordinary in taxonomic variety, composed of 2,760 specimens representing at the least 65 mammalian genera. This entire overview of the vertebrates from the tip of the Miocene in Africa presents designated morphological and taxonomic descriptions of dozens of taxa, together with species new to technology. It additionally contains effects from analyses of paleoenvironment, paleobiogeography, biochronology, and faunal turnover round the Pliocene-Miocene boundary, establishing a brand new window at the evolution of mammals, African fauna, and its environments.
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Extra info for Ardipithecus kadabba: Late Miocene Evidence from the Middle Awash, Ethiopia (The Middle Awash Series)
These features include a funnel-shaped rift ﬂoor and axial rift zone; voluminous hydromagmatic deposits along the frontal blocks of the rift margin and within the adjacent rift ﬂoor; an arcuate step-faulted broad western margin; a domed, rift-bound structure, the Central Awash Complex (CAC); the transverse Bouri horst; and numerous horst and graben structures mostly conﬁned to the eastern half of the rift ﬂoor. The transition zone includes both western and southeastern rift margins and the adjacent rift ﬂoor.
Tragoportax abyssinicus sp. nov. x Tragoportax sp. “large” x gen. et sp. indet. x x Anatidae x Simatherium aﬀ. demissum x Anseriformes Bovini x x x Tragelaphus moroitu sp. nov. x x Tragelaphus cf. moroitu x x Reduncini cf. Plectropterus sp. x gen. et sp. indet. “small” x gen. et sp. indet. x Falconiformes Pandionidae Tragelaphini a x Podiceps sp. aﬀ. Hippopotamus dulu Kobus aﬀ. oricornis x AVESa Hippopotamidae Kobus cf. porrecticornis x x Gazella sp. Nyanzachoerus kuseralensis sp. nov. gen. et sp.
The Middle Awash late Miocene remains tentatively referred here to the genus Giraﬀa may represent the earliest record of the genus in eastern Africa. Giraﬀa species are thus far documented largely from Plio-Pleistocene deposits. However, further recovery of more complete specimens will be necessary to conﬁrm the ﬁrst appearance of the genus in the Middle Awash. Hipparionine horses of the Eurygnathohippus clade from the Middle Awash late Miocene are described in Chapter 13. Eurygnathohippus was restricted to the African continent from 7ϩ to less than 1 Ma.