Les Eléphants (Loxodonta et Elephas) d'Afrique Orientale: systématique, phylogénie, intérêt biochronologique

Article · January 1979with5 Reads

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  • ... Insufficient comparative work has been done between the molars of P. recki recki and P. antiquus. However, in terms of occlusal morphology, the two molars available from Ti's al Ghadah can be closely matched with available specimens of both taxa (see, for example, illustrations of P. recki recki in Beden (1979), and of P. antiquus in Guenther (1977)). Similarly, the measurements that could be taken on these specimens are within the known ranges of both species (Table 6). ...
  • ... was first introduced by Matsumoto (1924). However, there has been controversy on whether species of this genus should be classified as Elephas, Elephas (Palaeoloxodon), or Palaeoloxodon (Maglio 1973; Beden 1979; Shoshani and Tassy 1996 ). Recently, different studies focusing on cranial observations concluded that Palaeoloxodon is a bona fide genus (Inuzuka and Takashi 2004; Shoshani and Tassy 2005; Shoshani et al. 2007). ...
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  • ... From his deductions, he made various adjustments to Laws [12] ageing technique between the ages of 10 and 30 years and now research projects commonly quote elephant ages as defined by Laws [12] with Jachmann [17] adjustments. A further detailed study [20] created a complicated ageing technique specifically designed to achieve a comparison in molar progression between the lower and upper sets of molars in extant elephants as an aid for paleontologists studying fossil proboscidean records where usually only one occlusal surface, or even a single molar is all that is available for examination. All of the above methods for ageing African elephants are in use today. ...