The below mentioned article provides a note on the noeggerathiopsida.
The class Noeggerathiopsida or the Noeggerathiales form a group of plants extremely peculiar and not yet fully known. Their affinities are rather uncertain. They have been placed within the Sphenopsida, within the Filicopsida and also between the Lycopsida and the Sphenopsida.
But, the more general opinion is to consider them as an isolated group of pteridophyta incertae sedis (i.e., Pteridophyta of uncertain affinities). It is, therefore, reasonable to consider them as a separate class of uncertain affinities as proposed by Pichi-Sermolli.
Two genera, Tingia with its strobilus Tingiostachya and Noeggerathia with its probable strobilus Noeggerathiostrobus are recognised. There are also some other fossils of fertile shoots which have been ascribed to this group. They are known from Carboniferous to Triassic in continental Europe.
Leaves are cycad-like with repeated dichotomous venation and with two rows of leaves on an axis resembling compound leaves of ferns. The strobili were heterosporous. One strobilus (Fig. 594) bears two compact rows of semi-circular sporophylls attached to an axis.
The margins of the megasporophylls are serrate and fringed with numerous sporangia, each of which latter contains 16 megaspores. Microspores and also megasporangium containing only a single megaspore have been found in other specimens. The megaspores were eight times the size of microspores and both of them were almost smooth as in the Sphenopsida.
In Tingia the leaves were in four rows. The strobili occurred in pairs and had four rows of free sporophylls with upturned tips, on the upper surfaces of which quadrilocular sporangia were borne possibly on stout stalks.
