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Corpus Systématique Végétale

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Dentition of Sivaladapis nagrii (Adapidae) from the late Miocene of India

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Springer (journals)
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Mots-clés d'auteur
  • Sivaladapis
  • Adapidae
  • Miocene primates
  • tooth eruption
  • symphyseal fusion
Nom du fichier dans la ressource
  • Philip D. Gingerich 1
  • Ashok Sahni 2
  • 1) Museum of Paleontology, The University of Michigan, 48109, Ann Arbor, Michigan
  • 2) Centre of Advanced Studies in Geology, Panjab University, 160014, Chandigarh, India

Two genera and three species of adapid primates are known from the middle and late Miocene of India and Pakistan. Most fossil specimens are fragmentary, but the best-known species, Sivaladapis nagrii,is now represented by enough specimens to permit composite reconstruction of much of the dentition. The incisors of Sivaladapishave spatulate crowns, and the canines are large, projecting teeth. Premolars and molars exhibit complex occlusion involving simultaneous approximation of pointed leading cusps on upper and lower molars, with linear trailing lophs. The premolar eruption sequence in Sivaladapisappears to be P 2-P4-P3, as in most extant prosimians. Symphyseal fusion of the mandibular rami occurred early in ontogeny, before the eruption of any of the anterior permanent teeth. We interpret Sivaladapisto have been a specialized arboreal folivore that became extinct near the end of the Miocene, when the distribution of forests was increasingly restricted and colobine monkeys first invaded South Asia.

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  • 1 - health sciences
  • 2 - psychology & cognitive sciences
  • 3 - behavioral science & comparative psychology
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  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - agronomie. sciences du sol et productions vegetales
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Animal Science and Zoology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - zoology
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International Journal of Primatology

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