Barclayopsis urceolata is a fossil species of the family Nymphaeaceae from the MaastrichtianBarclayopsis urceolata Erv. Knobl., Mai. (n.d.). The International Fossil Plant Names Index (IFPNI). Retrieved December 30, 2024, from https://www.ifpni.org/species.htm?id=8DEE67A3-FE1B-58F6-36B6-215B7189280BFriis, E. M., Crane, P. R., & Pedersen, K. R. (1997). Fossil history of magnoliid angiosperms. In Evolution and diversification of land plants (pp. 121-156). Tokyo: Springer Japan. and PaleoceneKnobloch, E., Kvaček, Z., Bůžek, Č., Mai, D. H., & Batten, D. J. (1993). Evolutionary significance of floristic changes in the Northern Hemisphere during the Late Cretaceous and Palaeogene, with particular reference to Central Europe. Review of Palaeobotany and Palynology, 78(1-2), 41-54. of Eisleben, Germany.Schultze-Motel, J. Fossilium Catalogus. II. Plantae. Pars 106. Index of generic names of fossil plants, 1979-2000. p. 14.
Description The oval to rounded, 2–3 mm wide seed has a up to 0.15 mm thick, two-layered testa.Knobloch, E., & Mai, D. H. (1986). Monographie der Früchte und Samen in der Kreide von Mitteleuropa (Vol. 47).
Taxonomy It was published by Ervin Knobloch and Dieter Hans Mai in 1984.Barclayopsis Erv. Knobl., Mai. (n.d.). The International Fossil Plant Names Index (IFPNI). Retrieved December 30, 2024, from https://www.ifpni.org/genus.htm?id=5010C66A-B842-4EA7-A620-EBBB2689F7E0Knobloch, E., & Mai, D. H. (1984). Neue Gattungen nach Früchten und Samen aus dem Cenoman bis Maastricht (Kreide) von Mitteleuropa. Feddes Repertorium, 95(1-2), 3-41. Etymology The specific epithet urceolata means urceolate, or jug-shaped.Polysiphonia urceolata (Lightfoot ex Dillwyn) Greville. (n.d.). AlgaeBase. Retrieved December 30, 2024, from https://www.algaebase.org/search/species/detail/?species_id=12875
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