1508 



CORMOPHYTA. 



Carboniferous ferns with a net-like venation as in Glossopieris (fig. 



1376). Finally, Mr Kidston includes in this family the simply pin- 

 nate Cardiopteris, of the Lower Carbon- 

 iferous, in which the somewhat heart- 

 shaped leaves are devoid of a midrib. 

 The OdontopteridecB form a well-defined 

 family with bi- or tripinnate leaves, in 

 which the leaflets are attached by the 

 whole width of their base ; the leaflets 

 are non-lobate, with their veins proceed- 

 ing wholly from the base, or in part from 

 an indistinct midrib. The type genus 



Fig. 1373. — Part of leaf of Neuropteridium elegans, and two leaflets enlarged ; 

 from the European Trias. 



Odontopteris (fig. 1374) occurs in the Carboniferous and Permian, 

 the figured species being common to Europe and North America. 



Fig. 1374.— Part of leaf of Odontopteris os7mindceformis ; from the Carboniferous of Europe. 



The bipinnate Ctenopteris (fig. 1375), from the Rhaetic and Lower 

 Lias, has leaves curiously resembling those of the Cycadaceous 



