genus Equisetum first appear in the Early Jurassic, represented by Equisetum dimorphum from the Early Jurassic of Patagonia and Equisetum laterale from...

genus Equisetum first appear in the Early Jurassic, represented by Equisetum dimorphum from the Early Jurassic of Patagonia and Equisetum laterale from...

almost certainly paraphyletic and would probably warrant being subsumed in Equisetum. But while some of the species placed there are likely to be ancestral...

unidentified comparable form †Equisetum †Equisetum cascadensis – type locality for species †Equisetum laterale †Equisetum montanensis †Erdtmanipollis †Erdtmanipollis...