Alienopteris livingstonensis gen. et sp. nov., enigmatic petrified tree fern stem (Cyatheales) from the Aptian Cerro Negro Formation, Antarctica

• Published in: Cretaceous Research
• Main Author: Vera, Ezequiel Ignacio
• Format: Article in Journal/Newspaper
• Language: English
• Published: Academic Press Ltd - Elsevier Science Ltd
• Subjects: Antarctica; Aptian; Tree ferns; Cyatheaceae; Cerro Negro Formation; https://purl.org/becyt/ford/1.5; https://purl.org/becyt/ford/1; Argentina; Argentino; Cerro Negro; Antarc*
• Online Access: http://hdl.handle.net/11336/102679

A new genus and species of Mesozoic fern, Alienopteris livingstonensis gen. et sp. nov., is defined, based on permineralized stems recovered from the Aptian Cerro Negro Formation (Antarctica). This new taxon is characterized by the presence of Y-shaped meristeles in the stem, surrounding an heteroge...