Note sur la présence d'Hystrix (Rodentia, Mammalia) dans les niveaux Plio-Pléistocènes des Chiwondo au Malawi: Implications taphonomiques et paleoécologiques

Translated title of the contribution: Note on the presence of Hystrix (Mammalia, Rodentia) in the Malawi Chiwondo Beds (Plio-Pleistocene): Taphonomical and palaeoecological implications

Christiane Denys, Oliver Sandrock, Ottmar Kullmer, Fernando Ramirez Rozzi, Timothy G. Bromage, Friedemann Schrenk

Research output: Contribution to journalArticle

Abstract

We evaluate the taxonomic affinities of an Hystricid from the Plio-Pleistocene hominid site of Uraha (Chiwondo Beds), northern Malawi. At the cross roads between eastern and southern Africa, these deposits are both unique and interesting because of their age (they encompass a period of major climatic change and have yielded early Homo remains). We describe here the third upper molar found in Uraha and compare it with Hystrix leakeyi Denys, 1987 and H. makapanensis Greenwood, 1958 specimens. The new specimen is smallerthan H. makapanensis and H. leakeyi. It also differs from the fossil species by the absence of posteroloph and a smaller lingual sinus and oblique labial lophs. The new Hystrix Linnaeus, 1758 specimen has a small size and is bunodont, which differentiates it from the modern species found in Malawi today like H. cristata Linnaeus, 1758 and H. africaeaustralis Peters, 1852. It could belong either to a new species or enter into the variability of the described ones, but due to the low degree of knowledge ofHystrix molar morphology and variability as well as the very low number of specimens for comparison, we retain an indeterminate status for this specimen. Further, we ascribe the absence of small mammals and especially small rodents in these lake-shore deposits to taphonomic and palaeoecological phenomena.

Translated title of the contributionNote on the presence of Hystrix (Mammalia, Rodentia) in the Malawi Chiwondo Beds (Plio-Pleistocene): Taphonomical and palaeoecological implications
Original languageFrench
Pages (from-to)729-738
Number of pages10
JournalGeodiversitas
Volume33
Issue number4
DOIs
StatePublished - Dec 30 2011

Keywords

  • Africa
  • Hominid site
  • Hystrix
  • Malawi lake
  • Mammalia
  • Plio-Pleistocene
  • Rift valley
  • Rodentia
  • Taphonomy

ASJC Scopus subject areas

  • Geology
  • Palaeontology

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