A proboscidean from the late Oligocene of Eritrea, a "missing link" between early Elephantiformes and Elephantimorpha, and biogeographic implications.
Proc Natl Acad Sci U S A
; 103(46): 17296-301, 2006 Nov 14.
Article
em En
| MEDLINE
| ID: mdl-17085582
ABSTRACT
We report on a late Oligocene proboscidean species from Eritrea, dated to 26.8 +/- 1.5 Mya. This "missing link" between early elephantiformes and Elephantimorpha is the oldest known nongomphothere proboscidean to probably display horizontal tooth displacement, typical of elephants [Elephantimorpha consists of Mammutida (mastodons) and Elephantida, and Elephantida includes gomphotheres, stegodons, and elephants]. Together with the newly discovered late Oligocene gomphotheres from Chilga, Ethiopia, the Eritrean taxon points to the importance of East Africa as a major area for the knowledge of the early evolution of Elephantimorpha before the faunal exchange between Eurasia and Africa.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Elefantes
Limite:
Animals
País/Região como assunto:
Africa
Idioma:
En
Revista:
Proc Natl Acad Sci U S A
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Eritréia