70-Million-Year-Old Mammal Fossil Discovered in Mongolia Rewrites the Story of Early Mammal Evolution
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3 Articles
70-million-year-old mammal fossil discovered in Mongolia rewrites the story of early mammal evolution
A new fossil from Mongolia's Gobi Desert has reshaped mammalian evolutionary understanding. This 70-million-year-old Tamirkhan balcarceli fossil belonged to zhelestids, which were previously misunderstood. The complete skeleton shows zhelestids were not early placental mammals as once thought. Instead, they were part of the extinct zalambdalestoid lineage, which evolved similar teeth independently. This discovery alters interpretations of mammal…
A team led by Julien Benoit and Jennifer Botha of the University of the Witwatersrand, with Vincent Fernandez of ESRF, identifies the first fossil egg of an ancestor of mammals. The study, published in PLOS ONE, is based on an embryo of Lystrosaurus about 250 million years old, discovered in South Africa. This result answers an ancient question: did the ancestors of mammals lay eggs? The answer seems positive, but the researchers remain cautious…
Stony Brook University Researcher Helps Reveal a Chapter of Mammal Evolution
State University of New York (SUNY) at Stony Brook (Stony Brook University) Professor Maureen O'Leary from the Department of Anatomical Sciences in Stony Brook University's Renaissance School of Medicine (RSOM) and research associate at the American Museum of Natural History (AMNH) is part of a research team that recently uncovered a preserved fossil from Mongolia's Gobi Desert that is reshaping scientists' understanding of mammal evolution duri…
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