Bonanzacarpum sprungerorum Manchester et T.A.Lott

Plant Fossil Names Registry Number: PFN000564

Act LSID: urn:lsid:plantfossilnames.org:act:564

Authors: S. R. Manchester & T. A. Lott

Rank: species

Genus: Bonanzacarpum Manchester et T.A.Lott

Reference: Manchester, S. R. & Lott, T. A. (2019): Bonanzacarpum sprungerorum, a bizarre fruit type from the Eocene Green River Formation of Utah, USA. – Fossil Imprint 75(2): 281–288.

Page of description: 283

Illustrations or figures: Text-figs 1–3

Name is type for

Types

Original diagnosis/description

Fruit a tabular, button-shaped circumscissile capsule, rounded-polygonal in transverse section with 4 to 6 equal to unequal sides. Capsule unilocular, circumscissile with an apical operculum closely fitting like a stopper. Lateral walls smooth, straight. Basal surface of locule with 7–11 smooth, obpyriform, slightly raised areas radiating from a central point. Obpyriform areas pointed proximally, with somewhat convex lateral margins and round distal margins. Obpyriform areas with corresponding cycle of smaller indentations on the basal external surface.

Etymology

The species name honors Mike and Sandra Sprunger who collected and donated some of the finest examples.

Stratigraphy

Paleogene, Eocene
Parachute Creek Member, early to middle Eocene, ca 47 my

Locality

United States
Vicinity of Bonanza, Utah (UF locality 18054: 39°53'40.76"N, 109°8'42.31"W).