Les microvertébrés du site à hominidés de Tighennif (Ex, Ternifine, Algérie) Taxonomie, taphonomie et paléoécologie

Identificador:  TDX:4327

Handle: https://hdl.handle.net/20.500.11797/TDX4327

Autors:  Saidani, Nadia

Resum:
The objective of this doctoral thesis is to highlight the paleobiodiversity of the microvertebrates of Tighennif, their accumulation and reconstruction of the paleoenvironment and paleoclimate in which hominids lived during the Lower Pleistocene (MIS 28-36), using a combination of taxonomic, tafonomic and paleoecological approaches applied to the sets of small mammals and herpelofauna of 9107 bone elements. The taxonomic study identified 26 taxa including 14 small mammals, 3 amphibians and 8 reptiles. The tafonomic analysis indicates that the Spanish remains accumulated in situ and that the main cause of accumulation was predation by various predators. Postdepositional alterations are characteristic of open-air deposits in a sedimentary context Wluviolacustre. Deposits appear little disturbed and no water transport of microvertebrates is detected. The paleoclimate deduced from micromammals and large mammals shows more general conditions warm and humid than today, with constant annual average temperatures of 26º and average rainfall significant annuals greater than 2500mm in all stratigraphic units.