Alloberberis aceroides (Knowlt.) Doweld
Plant Fossil Names Registry Number: PFN001248
Act LSID: urn:lsid:plantfossilnames.org:act:1248
Author: A. B. Doweld
Rank: species
Basionym: Sterculia aceroides Knowlt.
Reference for this name: Doweld, A. B. (2018): New names of fossil Berberidaceae. – Phytotaxa 351(1): 72–80.
Page of description: 73
Previously published illustration or figures: pl. 43, fig. 12 in Knowlton, F. H. (1923): Fossil plants from the Tertiary lake beds of South-Сentral Colorado. – Professional Papers, United States Geological Survey 131(G): 183–197.
Types for basionym
Holotype USNM P 36537, National Museum of Natural History, Smithsonian Institution, Washington, D.C., United States
Figures: pl. 43, fig. 12
Original diagnosis/description
Leaf small, semicoriaceous in texture, rounded and truncate at the base, three-lobed, the central lobe apparently much the longest and strongest (broken), lateral lobes short, acute, at an angle of about 45°; nervation obscure, except for the very strong midrib and the much lighter lateral ribs. which arise near the base of the blade. This little leaf, the only one seen in the collection, has the basal portion well preserved, but the evidently large central lobe is broken. The distance between the tips of the lateral lobes is about 3.5 centimeters.
Stratigraphy
Paleogene, Oligocene, Chattian
Upper Oligocene (Chattian).
Locality
United States
North bank of Rio Grande near Sevenmile Bridge, Creede, Mineral County, Colorado.
Plant fossil remain
macro- and meso-fossils-embryophytes except wood
Comments
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