Anomocephalus ( lat. Anomocephalus ) - a genus of synapsids from primitive anomodonts . The primitiveness of the anomocephalus is that it retained a complete set of teeth in both jaws, while in its descendants, dicynodonts , the set of teeth was reduced to only a single pair of tusks (and in some cases to a complete absence of teeth) and a massive beak that resembled a turtle covering the jaw.
| † Anomocephalus | |||||||||||||||||||||||||||||||||||||||||
Head reconstruction | |||||||||||||||||||||||||||||||||||||||||
| Scientific classification | |||||||||||||||||||||||||||||||||||||||||
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| International scientific name | |||||||||||||||||||||||||||||||||||||||||
Anomocephalus Modesto et al. 1999 | |||||||||||||||||||||||||||||||||||||||||
| Single view | |||||||||||||||||||||||||||||||||||||||||
† Anomocephalus africanus Modesto et al. 1999 | |||||||||||||||||||||||||||||||||||||||||
| Geochronology Perm period 298.9—251.9 Ma
◄ Nowadays◄ Cretaceous-Paleogene extinction◄ Triassic extinction◄ Mass Permian Extinction◄ Devonian extinction◄ Ordovician-Silurian extinction◄ Cambrian explosion | |||||||||||||||||||||||||||||||||||||||||
It was discovered in 1999 in the oldest mountain range of Gondwana ( Williston , Karoo , the Northern Cape , South Africa ). His discovery was evidence that this group of herbivores arose in Gondwana, and not in Laurasia, as previously thought. He lived about 260 million years ago, in the Permian period, in arid territories in the vicinity of rivers and lakes, reminiscent of the modern landscape of Namibia or Botswana [1] . A close relative of tiaraudens from Brazil [2] .
Notes
- ↑ Modesto S., Rubidge B., and Welman J. The most basal anomodont therapsid and the primacy of Gondwana in the evolution of the anomodonts (English) // Proceedings of the Royal Society of London B: journal. - 1999. - Vol. 266 . - P. 331—337 .
- ↑ Cisneros JC, Abdala F., Rubidge BS, Dentzien-Dias D., Bueno AO Dental Occlusion in a 260-Million-Year-Old Therapsid with Saber Canines from the Permian of Brazil (Eng.) // Science: journal. - 2011 .-- Vol. 331 . - P. 1603-1605 . - DOI : 10.1126 / science.1200305 . - PMID 21436452 .
Literature
- McCarthy T. & Rubidge B. 2005. The story of Earth & Life. A southern African perspective on a 4.6 billion-year journey. Struik Publishers, Cape Town. 333 pp.
- Van Rooyen F. 26 Maart 2011. Brasiliaanse oerdier had dalk SA familie. Volksblad : 5. [1] .