Taylor, Witt , DeVore, Melanie L. , Pigg, Kathleen B. .
Nymphaeceous seeds from the Late Paleocene Almont flora of North Dakota, USA.
Seeds referable to the water lily family Nymphaeaceae are described from the Late Paleocene Almont Flora of central North Dakota, USA. Seeds are oval, 5 mm long x 3 mm wide, and have an apical operculum and a prominent raphe. The outer surface of the seeds is comprised of rectangular shingle-like cells 150 μm wide x 40 μm high with only slightly sinuous cell margins. The raphe and micropyle are separated by several cells. Several specimens have well-developed perisperm and an apically placed embryo cavity. The Almont seeds share some features with several different extant genera including Nymphaea, Nuphar, Euryale, and Victoria and appear distinct from the permineralized fossil seeds of the early Eocene Nuphar from Wutu China and the middle Eocene Allenbya from the Princeton chert. The presence of these fossils further illustrates the occurrence of Nymphaeaceae in higher latitudes of North America by the Paleocene.
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Kathleen Pigg's laboratory website
1 - Arizona State University, School of Life Sciences, Asu, Main Campus, Po Box 874501, Tempe, Arizona, 85287-4501, USA
2 - Georgia College & State University, Biological & Environmental Sciences, 135 Herty Hall, Campus Box 81, Milledgeville, Georgia, 31061, USA
Presentation Type: Oral Paper
Location: Salon G - Austin Grand Ballroom/Hilton
Date: Tuesday, August 16th, 2005
Time: 9:30 AM