Anacostia virginiensis E.M.Friis, P.R.Crane et K.R.Pedersen

Plant Fossil Names Registry Number: PFN001972

Act LSID: urn:lsid:plantfossilnames.org:act:1972

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

Rank: species

Genus: Anacostia E.M.Friis, P.R.Crane et K.R.Pedersen

Reference: Friis, E. M., Crane, P. R. & Pedersen, K. R. (1997): Anacostia, a new basal angiosperm from the Early Cretaceous of North America and Portugal with trichotomocolpate/monocolpate pollen. – Grana 36: 225–244.

Page of description: 231

Illustrations or figures: figs 4, 5

Types

Original diagnosis/description

Fruiting units semicircular to obovate in outline, with a straight or slightly convex ventral margin; collapsed fruit wall typically forming a narrow wing-like rim around the seed; epidermal cells of fruit wall small, each frequently with an elongated central papillate projection. Seed semicircular to obovate in outline, with slightly pointed micropylar area; outer cells of testa palisade-shaped.

Etymology

From the state of Virginia where the fossils were collected.

Stratigraphy

Cretaceous, Lower Cretaceous, Albian
Patapsco Formation, Potomac Group (?basal part of palynological Subzone II-B, early or middle Albian)

Locality

United States
Puddledock locality, Tarmac Lone Star Industries sand and gravel pit, 9 km southwest of Hopewell, Virginia