Konijnenburgia, a new genus of the fern family Matoniaceae

A new genus Konijnenburgia is introduced for fertile, well preserved ferns of the family Matoniaceae, which were previously assigned to the genus Nathorstia Heer. It is based on Konijnenburgia latifolia (Nathorst) comb. nov. from the Upper Cretaceous of Greenland. The lectotype for Konijnenburgia latifolia is designated and its status is discussed. Konijnenburgia bohemica is described from the Upper Cretaceous, Cenomanian of the Czech Republic and compared to Konijnenburgia latifolia and other Cretaceous members of the family. Introduction of the genus Konijnenburgia induced new combinations which are the following: Konijnenburgia galleyi (Miner) comb. nov. and Konijnenburgia alata (Halle) comb. nov.