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Year
Total: 6
genus
valid
Genus
Archaeosperma
Pettitt, C.B. Beck
Contr. Mus. Paleontol. Univ. Michigan, 22(10):
140.
22 Nov 1968
genus
valid
Genus
Catenalis
S.-G. Hao, C.B. Beck
Canad. J. Bot., 69(4):
874.
31 May 1991
genus
valid
Genus
Crossia
C.B. Beck, W.E. Stein
Palaeontographica, Abt. B, Paläophytol., 229(4-6):
127.
Sep 1993
genus
valid
Genus
Eddya
C.B. Beck
Palaeontographica, Abt. B, Paläophytol., 121(1-3):
10.
Sep 1967
genus
valid
Genus
Tetraxylopteris
C.B. Beck
Amer. J. Bot., 44(4):
359.
11 Jun 1957
genus
valid
Genus
Yunia
S.-G. Hao, C.B. Beck
Rev. Palaeobot. Palynol., 68(3-4):
191.
10 Jul 1991
