Platananthus potomacensis E.M.Friis, P.R.Crane et K.R.Pedersen

Plant Fossil Names Registry Number: PFN002768

Act LSID: urn:lsid:plantfossilnames.org:act:2768

Authors: E. M. Friis, P. R. Crane & K. R. Pedersen

Rank: species

Genus: Platananthus Manchester

Reference: Friis, E. M., Crane, P. R. & Pedersen, K. R. (1988): Reproductive Structures of Cretaceous Platanaceae. – Biologiske Skrifter 31: 1–55., link

Page of description: 10

Illustrations or figures: pl. 1, figs 1–8, pl. 2, figs 1–6

Types

Original diagnosis/description

Staminate flowers in dense inflorescences. Flower surrounded by elongate, spatulate tepals, about the same length as the pollen sacs. Apical extension of connective peltate and slightly elongate not clearly delimited at the base; typically one third to one fourth the length of the pollen sacs, slightly projecting beyond the tepals. Pollen grains small to very small, prolate and finely reticulate.

Etymology

From the Potomac River that runs close to where the material was collected.

Stratigraphy

Cretaceous, Lower Cretaceous, Albian
Patapsco Formation (Potomac Group), Late ALbian

Locality

United States
West Brothers clay pit, Maryland

Plant fossil remain

macro- and meso-fossils-embryophytes except wood