New genus of heterosporous ferns of the order Heroleandrales from the Lower Cretaceous of Kazakhstan
Golovneva, L.B.; Krassilov, V.A.
Paleontologiceskij Zurnal (3): 108-112
2001
ISSN/ISBN: 0031-031X
Accession: 011054156
As a result of a study of spore-bearing structures, a new genus Vachramelia is established for a fern from the Lower Cretaceous of Kazakhstan previously described as Adiantites prigorovskii Vachr. (Vachrameev, 1952). The genus is assigned to the recently discovered order Heroleandrales that includes heterosporous plants with solitary sporangia producing numerous megaspores and with four megaspore tetrad members equally developed (Krassilov and Golovneva, 2000). The new find adds to knowledge of the morphology and extends the stratigraphic range of the order.