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Hace 1 día · Materials containing finely ground iron(III) oxides or oxide-hydroxides, such as ochre, have been used as yellow, red, and brown pigments since pre-historical times. They contribute as well to the color of various rocks and clays , including entire geological formations like the Painted Hills in Oregon and the Buntsandstein ("colored sandstone", British Bunter ). [48]
Hace 1 día · Dingo on the beach at Fraser Island, Queensland. The dingo (either included in the species Canis familiaris, or considered one of the following independent taxa: Canis familiaris dingo, Canis dingo, or Canis lupus dingo) is an ancient species of Canid found in Australia. Its taxonomic classification is debated as indicated by the variety of scientific names presently applied in different ...
