The spiny legged 308-million-year-old arachnid Douglassarachne acanthopoda was discovered the famous Mazon Creek locality. More than 300 million years ago, all sorts of arachnids crawled around the ...
Dominated by carbon-rich swamps and forests proliferating across Earth's rocky surface, the Carboniferous period saw a boost in atmospheric oxygen and vast quantities of carbon dioxide trapped in what ...
Fossilized Douglassarachne acanthopoda, noted for its up-armored spiny legs, might have resemblance to modern harvestmen spiders, but with a more experimental body plan. LAWRENCE — More than 300 ...
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