title: First fossil record of transfer cells in angiosperms.
abstract: Transfer cells are specialized plant cells that optimize short-distance transport by an extension of the interior surface of the cell walls. Using scanning electron microscopy (SEM), we found transfer cells in the fossil seed coat of Ehretia clausentia (Ehretiaceae, Boraginales) from the London Clay flora (Lower Eocene). This is the first fossil record of transfer cells in angiosperms.
authors.affiliation: Freie Universität Berlin, Fachbereich Geowissenschaften, Fachrichtung Paläontologie Malteser Str. 74-100, Haus D, D-122 49 Berlin, Germany;
authors.forename: Marc
authors.initials: M
authors.lastname: Gottschling
authors.forename: Hartmut H
authors.initials: HH
authors.lastname: Hilger