This Wealden fern[839] has been doubtfully assigned to the Schizaeaceae on the ground of the resemblance of the sterile fronds to those of some species of _Aneimia_, and because of the difference between the sterile and fertile pinnae (Fig. 260). _Ruffordia_ cannot be regarded as a well authenticated member of the Schizaeaceae. [Illustration: FIG. 261. A, A′. _Chrysodium lanzaeanum._ B, B′. _Lygodium Kaulfussi._ C. _Marattia Hookeri._ (After Gardner and Ettingshausen; A, B, ¾ nat. size.)] _Lygodium Kaulfussi_, Heer. Fig. 261, B, B′. Fragments of forked pinnules, agreeing very closely in venation and general appearance with recent species of _Lygodium_, have been identified by Gardner and Ettingshausen[840] from English Eocene beds and by Knowlton from the Miocene beds of the Yellowstone Park[841] as _Lygodium Kaulfussi_ Heer (fig. 261, B). Despite the absence of sporangia it is probable that these fragments are correctly referred to the Schizaeaceae. The sterile and fertile specimens figured by Heer[842] from Tertiary beds of Switzerland agree very closely with recent examples of _Lygodium_. Similar though perhaps less convincing evidence of the existence of this family in Europe is furnished by Saporta[843], who described two Eocene species from France. =Gleicheniaceae.= The application by Goeppert[844] and other earlier writers of the generic name _Gleichenites_ to examples of Palaeozoic ferns was not justified by any satisfactory evidence. One of Goeppert’s species, _Gleichenites neuropteroides_, is identical with _Neuropteris heterophylla_[845], a plant now included in the Pteridosperms.