Author:
Bergen,P.F.Van;Collinson,M.E.;de Leeuw,J.W.
Year:
1993
Title:
Chemical composition and ultrastructure of fossil and extant Salvinialean microspore Massulae and megaspores
Reference:
Bergen,P.F.Van et al. (1993) Chemical composition and ultrastructure of fossil and extant Salvinialean microspore Massulae and megaspores Grana.Supplement # 1 P. 18- 30
Google Academy:
try to search by title in english
Genus Species Country(Region) From To
Azolla Azolla Montana Late Maestrichtian Early Paleocene
Azolla Azolla sp Wyoming Late Maestrichtian Early Paleocene
Parazolla Parazolla sp Montana Late Maestrichtian Early Paleocene
Salvinia Salvinia sp Czechoslovakia Miocene
Salvinia Salvinia sp England Paleocene