Menispermites calderensis Jud, Gandolfo, A.Iglesias et Wilf in Jud, Iglesias, Wilf & Gandolfo
Plant Fossil Names Registry Number: PFN002659
Act LSID: urn:lsid:plantfossilnames.org:act:2659
Reference: Jud, N. A., Iglesias, A., Wilf, P. & Gandolfo, M. A. (2018): Fossil moonseeds from the Paleogene of West Gondwana (Patagonia, Argentina). – American Journal of Botany 105(5): 927–942.
Page of description: 932
Illustrations or figures: fig. 5A–C
Holotype MPEF-Pb 6803, Museo Paleontológico Egidio Feruglio, Trelew, Patagonia, Argentina
Figures: fig. 5A–C
Leaf simple, petiolate; blade attachment subpeltate; blade ovate, nearly symmetrical; base broadly rounded, cordate, base angle reflexed; apex acute, retuse; margin entire. Primary venation suprabasal actinodromous, basal veins departing from the petiole insertion point; central primary slightly wider than lateral primaries; first pair of lateral primaries arching laterally and about one-quarter the distance to apex, second pair extending about two-thirds the distance to apex into apical half of lamina; secondary vein framework brochidodromous, secondary veins excurrent, ascending from the central primary with the lowermost pair diverging near the middle of the blade, central secondary veins alternate or subopposite, simple to compound agrophic veins; tertiary vein framework mixed alternate/opposite percurrent; fourth and fifth vein order framework regular polygonal reticulate; areoles regular, polygonal; fimbrial vein conspicuous.
The specific epithet “calderensis” means “of the caldera,” referring to the caldera-lake depositional setting of the Tufolitas Laguna del Hunco (Aragón and Mazzoni, 1997).
Paleogene, Eocene, Ypresian
Tufolitas Laguna del Hunco, Huitrera Formation, Middle Río Chubut Volcanic-Pyroclastic Complex
LHF 0038 float sample, Chubut Province
Plant fossil remain
macro- and meso-fossils-embryophytes except wood