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Cryptantha auriculata (M.K. Elias) Segal, Transactions of the Kansas Academy of Science 67: 203. 1964.
[Krynitzkia auriculata M.K. Elias, The University of Kansas Science Bulletin 20: 358. 1932.]
Cryptantha chaneyi (M.K. Elias) Segal, Transactions of the Kansas Academy of Science 67: 203. 1964.
[Krynitzkia chaneyi M.K. Elias, The University of Kansas Science Bulletin 20: 357-358. 1932.]
NOTE: C. chaneyi is probably an Oreocarya species.
Cryptantha coroniformis (M.K. Elias) Segal, Transactions of the Kansas Academy of Science 67: 203. 1964.
[Krynitzkia coroniformis M.K. Elias, The University of Kansas Science Bulletin 20: 356-357. 1932.]
See Elias 1932: Plate 30 for images of the three fossil Cryptantha/Oreocarya species.
See also: Segal, The Southwestern Naturalist 11: 205-210. 1966.
For information on age of these fossils (Neogene Ogallala, 5.5-10 million years ago) formation see:
Ludvigson, et al. 2009. Current Research in Earth Sciences Bulletin 256, part 2:1-9.
Cryptantha parvicarpa Thomasson, Kansas Geological Survey Bulletin 218. 1979.
Description: http://www.kgs.ku.edu/Publications/Bulletins/218/06_syst.html#SYST
Photographs: http://www.kgs.ku.edu/Publications/Bulletins/218/08_plates.html
See Thomasson 1979 for additional images and information.
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