Tag Archives: marsupial

Ancient ‘genomic parasites’ spurred evolution of pregnancy in mammals

By Guest PostMay 2, 2015Scienceavril group, food trust blockchain, ibm food trust, immune system, mammals, marsupial, opossum, placental mammals, protein industry, university of chicago

Study identifies thousands of genes that were turned on or off in the uterus during the evolution of pregnancy

An international team of scientists has identified large-scale genetic changes that marked the evolution of pregnancy in mammals. (more…)

Dinosaur-chewing mammals leave behind oldest known tooth marks

By Guest PostJune 24, 2010Scienceadrosaurid, alberta, aquatic reptile, canada, ceratopsid, champsosaurus, cleveland museum of natural history, deer, dinosaur, dinosaur-chewing mammals, Epoch, femur bone, journal paleontology, late cretaceous, mammalian tooth marks, marsupial, michael j. ryan, multituberculates, nicholas longrich, ornithischian, paleontologists, royal tyrrell museum of palaeontology, university of alberta laboratory for vertebrate palaeon, yale university

New Haven, Conn. — Paleontologists have discovered the oldest mammalian tooth marks yet on the bones of ancient animals, including several large dinosaurs. They report their findings in a paper published online June 16 in the journal Paleontology.

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