The Shallow-Water Cradle of Vertebrate Evolution (17 of 17) (IMAGE)
Caption
A 430-million-year-old heterostracan swims in shallow tropical waters in what is now the Canadian Arctic. This material relates to a paper that appeared in the Oct. 26, 2018 issue of Science, published by AAAS. The paper, by Lauren Sallan at University of Pennsylvania in Philadelphia, PA, and colleagues was titled, "The nearshore cradle of early vertebrate diversification."
Credit
Nobumichi Tamura
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