Patagoniapteris Gnaed. et Zavattieri

Plant Fossil Names Registry Number: PFN002691

Act LSID: urn:lsid:plantfossilnames.org:act:2691

Authors: S. C. Gnaedinger & A. M. Zavattieri

Rank: genus

Reference: Gnaedinger, S. C. & Zavattieri, A. M. (2021): A new Late Triassic dipteridacean fern from the Paso Flores Formation, Neuquén Basin, Argentina. – Acta Palaeontologica Polonica 66(4): 885–900.

Page of description: 889

Type

Original diagnosis/description

Fan-shaped fronds dissected in two equal and opposite rachial arms have numerous primary segments (more than 18). Frond lamina between the primary segments fused at the base, the remaining part free, lanceolate, with undulated to deeply dissected margins. Primary and secondary veins simple, tertiary veins dichotomize and form irregularly polygonal meshes. Exindusiate sori arranged on either side of the primary veins, and of the base of secondary veins. Circular sori have more than 45 sporangia. Annulus oblique and complete

Etymology

In reference to Patagonia the geographical region situated in south Argentina and Chile to which the Neuquén Province belongs, and pteris refers to ferns.