Posted: 25 Sep 2016 11:29 AM PDT
The rise of eukaryotic organisms (organisms with complex cells, or a single cell with a complex structure) is still a mystery, but researchers have compelling evidence that Tappania plana may represent one of the earliest eukaryotic fossils. Well-preserved Tappania plana fossils from a Montana field site could be a crown-group eukaryote, providing one of the first links from this period in the fossil record to extant eukaryotes.
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