Cardstonia M.Riley et Stockey

Plant Fossil Names Registry Number: PFN001879


Authors: M. G. Riley & R. A. Stockey

Rank: genus

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


Cardstonia tolmanii M.Riley et Stockey

Original diagnosis/description

Leaves simple, ovate to elliptic, margin entire; apex convex to rounded; base cordate. Venation campylodromous, primary veins originating at or near base, running in strongly recurved arches that converge apically, merging at or near apex; apical pore present. Prominent fimbrial vein present. Secondary veins diverging at low angles near midrib and higher angles near margin; alternating major and minor secondary veins, with 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 the town of Cardston, Alberta, near which the specimens were collected.

Plant fossil remain

macro- and meso-fossils-embryophytes except wood

Names associated with genus

Cardstonia tolmanii M.Riley et Stockey 2004


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