The evolution of development

On the basis of an analysis of 520 million-year-old fossils, LMU researchers show that embryonic and larval development in the early ancestors of spiders and scorpions was strikingly and unexpectedly similar to that of modern crabs. The fossil chelicerate larva discovered by LMU researchers is only 2 mm  [Credit: Ludwig Maximilian University of Munich]The shale formations of Chengjiang in southwestern China are a treasure trove...

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Via: The Archaeology News Network