Leaves of Urticales from the Late Cretaceous and Early Tertiary in the Northern hemisphere and their ecology

Abstract

The so called Viburnum leaves of Late Cretaceous seem to belong to Hamame lidales, often associated with Platanaceae. Epidermis containing - sediments are rare in Cretaceous. Thus the closely related Urticales were confused with Rham naceae, which gave rise to a wrong ecological interpretation of Cretaceous cli mate. After Knowlton, Brown and Takhtajan the Celtis area was confirmed to be a Tethyan one, while Ulmus remained in the North.