title: Molecular dates require geologic testing.
authors.affiliation: Department of Geosciences, Pennsylvania State University, University Park, PA, 16802, USA.
authors.forename: Peter
authors.initials: P
authors.lastname: Wilf
authors.affiliation: CONICET, Museo Paleontológico Egidio Feruglio, Avenida Fontana 140, 9100, Trelew, Chubut, Argentina.
authors.forename: Ignacio H
authors.initials: IH
authors.lastname: Escapa
mesh_terms: D044822:Biodiversity; D005075:Biological Evolution; D005580:Fossils; D009792:Oceans and Seas; D010802:Phylogeny; D010944:Plants / Q000235:genetics*
keywords: Gondwana; Patagonia; divergence dating; evolutionary radiations; geochronology; molecular clocks; paleobotany