PaleoDB taxon number: 256647
Diagnosis. Infructescence elongate, more or less cylindrical with helically arranged persistent involucres. Involucres sessile, saclike, gradually narrowed and somewhat more thickened apically, with a longitudinal slit extending from near the base to the apex, sometimes with bifurcate tips. Involucres at apex of infructescence smaller than those in the main portion. Nuts elliptical, smooth, with epigynous perianth.
Full reference: S. R. Manchester and Z. D. Chen. 1998. A new genus of Coryloideae (Betulaceae) from the Paleocene of North America. International Journal of Plant Sciences 159(3):522-532
Subtaxa: Cranea wyomingensis
Type: Cranea wyomingensis