Nitaspermum taylorii E.M.Friis, P.R.Crane et K.R.Pedersen

Plant Fossil Names Registry Number: PFN001793

Act LSID: urn:lsid:plantfossilnames.org:act:1793

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

Rank: species

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

Reference: Friis, E. M., Crane, P. R. & Pedersen, K. R. (2018): Fossil seeds with affinities to Austrobaileyales and Nymphaeales from the Early Cretaceous (early to middle Albian) of Virginia and Maryland, USA: new evidence for extensive extinction near the base of the angiosperm tree. in Krings, M., Harper, C. J., Cúneo, N. R., Rothwell, G. W. (eds): Transformative paleobotany. Papers to commemorate the life and legacy of Thomas N. Taylor. Academic Press: 417–435.

Page of description: 419

Illustrations or figures: pls I-IV

Name is type for

Nitaspermum E.M.Friis, P.R.Crane et K.R.Pedersen 2018

Types

Holotype PP53993, Paleobotanical Collections, Department of Geology, The Field Museum, Chicago, Illinois, USA
Figures: pl. I, figs 4–6, pl. II, fig. 1–4

Note: Holotype from the Puddledock sample 156.

Paratypes: PP53973, PP54044, PP56530 (Puddledock sample 082); PP54182, PP56532 (Puddledock sample 083); PP56533 (Puddledock sample 151) PP54039, PP56534 (Puddledock sample 156); PP56536, PP56540 (Puddledock sample 181); PP53946 (Puddledock sample 182); PP56542 (Puddledock sample 195).

Original diagnosis/description

As for the genus with the following additions: Seeds elliptic in lateral view, broadly elliptic in transverse section. Hilum and micropyle area not raised. Hilum circular in outline with prominent rim. Palisade cells of exotesta short. Facets of exotesta cells equiaxial, irregularly aligned over most of the seed surface; folds of anticlinal walls rounded. Exotestal tissue between hilum and micropyle elongate, almost straight in longitudinal section.

Etymology

The species is named for Thomas N. Taylor for his outstanding contributions to the study of fossil plants.

Stratigraphy

Cretaceous, Lower Cretaceous, Albian
Basal part of Subzone IIB, Potomac Group (early to middle Albian)

Locality

United States
Puddledock locality, former Tarmac Lone Star Industries (Vulcan Materials Co.) sand and gravel pit, located south of Richmond and east of the Appomattox River in Prince George County, Virginia (37°15'52'' N; 77°22'10'' W)

Plant fossil remain

macro- and meso-fossils-embryophytes except wood

Comments

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