A new Early Cretaceous relative of Gnetales: <it>Siphonospermum simplex </it>gen. et sp. nov. from the Yixian Formation of Northeast China

<p>Abstract</p> <p>Background</p> <p>Knowledge on fossil and evolutionary history of the Gnetales has expanded rapidly; <it>Ephedra </it>and ephedroids as well as the <it>Gnetum-Welwitschia </it>clade are now well documented in the Early Cretaceo...

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Bibliographic Details
Main Authors: Friis Else, Rydin Catarina
Format: Article
Language:English
Published: BMC 2010-06-01
Series:BMC Evolutionary Biology
Online Access:http://www.biomedcentral.com/1471-2148/10/183