Jan. 6, 2014 — New fossils from Belgium have shed light on the origin of some of the most well-known, and well-loved, modern mammals. Cats and dogs, as well as other carnivorous mammals (like bears, seals, and weasels), taxonomically called 'carnivoraformes', trace their ancestry to primitive carnivorous mammals dating back to 55 million years ago (the beginning of the time period called the Eocene). A study, published in the most recent issue of the Journal of Vertebrate Paleontology, discusses the origins of this group and describes new specimens of one of the earliest of these primitive taxa.
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