[ad_1] Brain tissue is naturally soft. Unlike bones, shells or teeth, it is rich in fat and decays rapidly, rarely appearing in the fossil record. Invertebrate paleontologist Russell Bicknell ofRead More
[ad_1] Brain tissue is naturally soft. Unlike bones, shells or teeth, it is rich in fat and decays rapidly, rarely appearing in the fossil record. Invertebrate paleontologist Russell Bicknell ofRead More