Sentences with phrase «sea spider fossil»
That's why University of Oxford paleobiologist Derek Siveter was elated when he and colleagues found the oldest and most complete sea spider fossil to date in Herefordshire, United Kingdom.
http://www.sciencemag.org/ Not exact matches
Scientists have struggled to solve the mystery, in part because the delicate sea spiders are rarely preserved as fossils.
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A lucky fossil find and a novel imaging technique have brought researchers closer to understanding the mysterious origins of the sea spider, a spindly arachnid that dwells on the ocean floor.
The fossil also «has all the hallmarks of current - day sea spiders,» Siveter says, suggesting that sea spiders emerged as a distinct group about 450 million years ago.