Cardstonia tolmanii M.Riley et Stockey
Plant Fossil Names Registry Number: PFN001880
Act LSID: urn:lsid:plantfossilnames.org:act:1880
Authors: M. G. Riley & R. A. Stockey
Genus: Cardstonia M.Riley et Stockey
Reference: Riley, M. G. & Stockey, R. A. (2004): Cardstonia tolmanii gen. et sp. nov. (Limnocharitaceae) from the Upper Cretaceous of Alberta, Canada. – International Journal of Plant Sciences 165(5): 897–916., link
Page of description: 899
Illustrations or figures: figs 2–3
Name is type for
Cardstonia M.Riley et Stockey 2004
Holotype UAPC-ALTA S55138, University of Alberta (UAPC-ALTA), Edmonton, Canada
Figures: Fig. 2a
Note: Paratypes: UAPC-ALTA S50947, S52263, S52279, S52268, S52266, S52272, S50989.
Leaves simple, ovate to elliptic, 5–12 cm long, 3.5–8.5 cm wide, l:w ratio 1.4:1, margin entire; apex convex to rounded; base cordate. Petiole 3–4 mm wide, at least 2 cm long, petiolar attachment marginal. Venation campylodromous, primary veins 23–27, with 3–5 medial veins originating at or near base; outer primaries running in strongly recurved arches that converge apically, merging at or near apex; apical pore present. Prominent fimbrial vein present. Secondary veins diverging at angles 45°–60° near midvein and 90° near margin; alternating major and minor secondary veins, with variable ABAB pattern, occasionally anastomose and dichotomize. Tertiary (transverse) veins few, with straight to slightly curved courses, forming moderately developed (irregular shape, variable-sized) areolae.
For Shayne Tolman of Cardston, Alberta, who brought the locality to the attention of the authors and spent many hours working with them in the field.
Cretaceous, Upper Cretaceous
Late Campanian–Early Maastrichtian
St. Mary River Formation
Along the banks of the St. Mary River below the St. Mary Reservoir dam and Spillway near Cardston, Alberta (T5 R254 S12 SE 1/4 W4M; 49°22′10″N, 113°06′10″W; UTM Grid 12: 5470600N, 347300E)
Plant fossil remain
macro- and meso-fossils-embryophytes except wood
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