Assertion: dinoflagellate | /r/CapableOf | describe by ehrenberg
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text: First discovered by Müller in 1773, and later described by Ehrenberg in the 1830's from examinations of Cretaceous cherts, the dinoflagellates are thought to have originated in the Ediacaran Era or earlier, 570 million to one billion years ago and near the base of eukaryotic evolution.