Clypeina tibanai, sp. nov. (Polyphysacea, Dasycladales, Chlorophyta), mid-Cretaceous green alga from the Potiguar Basin, Brazilian margin of the young South Atlantic Ocean

• Published in: Geologica Acta
• Main Authors: Granier, B., Dias-Brito, D., Bucur, I. I.
• Other Authors: Universidade Estadual Paulista (UNESP)
• Format: Article in Journal/Newspaper
• Language: English
• Published: Univ Barcelona 2014
• Subjects: Dasycladales; Polyphysaceae; Clypeina; Cladosporate; Cretaceous; Albian; Cenomanian; South Atlantic Ocean
• Online Access: http://hdl.handle.net/11449/117385; https://doi.org/10.1344/GeologicaActa2014.12.3.5

Carbonatos do Brasil Project - Petrobras The fossil genus Clypeina (Michelin, 1845) comprises some 40 species. We describe Clypeina tibanai, a new species from ? upper Albian-Cenomanian strata of the Potiguar Basin, Brazil, characterised by closely set verticils of tubular, bended laterals. It is compared with Clypeina hanabataensis Yabe & Toyama, 1949, a Late Jurassic species, and with Pseudoactinoporella fragilis (Conrad, 1970), an Early Cretaceous taxon. The new species belongs to a short list of green algae found in the young South Atlantic oceanic corridor, an assemblage defining a phycological paleobioprovince discrete from that of the Tethyan realm.