Tomas Getachew: Morphological and dietary evolution of Elephas recki
SÉMINAIRE / SEMINAR
5ème séance / 5th session: Morphological and dietary evolution of Elephas recki from the Pliocene-Pleistocene Shungura Formation (Lower Omo, Ethiopia), par/by TOMAS GETACHEW (ARCCH)
Mardi 10 mai 2016 (16-17h30) / Tuesday 10 May 2016 (4:00 PM-5:30 PM). Lieu / Venue: Auditorium of the Authority for Research and Conservation of Cultural Heritage
Organisation: CFEE & Authority for Research and Conservation of the Cultural Heritage (Heritage Collection & Laboratory Service Directorate, Heritage Training Unit).
Morphological and dietary evolution of Elephas recki from the Pliocene-Pleistocene Shungura Formation (Lower Omo, Ethiopia), par/by TOMAS GETACHEW
The Shungura Formation is a Plio-Pleistocene paleontological site found in southern Ethiopia, in the Lower Omo Basin. It is one of the best sites which are radiometrically well dated. It yielded abundant mammalian fossils, among which proboscideans (elephants and relatives) were common elements; at Shungura there were seven proboscidean species that went extinct during the Pleistocene. Given their size and this diversity, proboscideans are important for the reconstruction of paleoenvironments. I present a study of both diversity and paleoecology of these animals, more specifically on the species Elephas recki, very abundant at Shungura. Dental metric measurements were conducted on the original materials of Shungura. They were compared with morphological observations made on published and unpublished materials. Results from the biometric analysis indicate that different subspecies of Elephas recki show statistically significant evolutionary changes in terms of the biometric traits. Generally, the results show that there is no clear progressive increase in crown height. Instead, some sudden changes in morphological features and no progressive trends in the lineage of Elephas recki were observed throughout the Plio-Pleistocene of Shungura.
L’intervenant / The speaker
Tomas Getachew (MA) est l’un des conservateurs des collections paléontologiques de l’Authority for Research and Conservation of Cultural Heritage (ARCCH), Ministère de la Culture et du Tourisme, Addis-Abeba, Éthiopie. / Tomas Getachew (MA) is a curator of paleontological collections at the Authority for Research and Conservation of Cultural Heritage (ARCCH), Ministry of Culture and Tourism, Addis Ababa, Ethiopia.