LITTLE RIVER GROUP, No. IIL 



103 



Genera of the Pre- Carboniferous Land Flora of Northeastern America, in the 



ORDER of their APPEARANCE ; AND THE SURVIVALS OR REPRESENTATIVES 



IN THE Carboniferous Age. 



60 



Psilophyfon 



Cordiates 



Bornia 



CKulopteris 



Arthrostigma 



Leptophleuni 



Stigniaria 



Prototaxiles 



Annularia (plant) 



Rhodea 



Rachiopteris 



Psaronius 



Cyclostigma 



Lepidodendron 



Lepidophloios 



Sporangites 



Sigillaria 



Syringodendroii 



Didyinopliyllum 



Xematoxylon 



Aporoxylon. ... 



Ormoxylon 



Cladoxylon 



Celluloxyloii 



Dadoxylon 



Syringoxylon 



Anarthrocanna 



Equi.setites 



Aneimite.s 



ArcliiPopteris 



Platyphyllum 



Spheiiopteris 



Rhacophyllum 



Trichonianites 



Asteropteris 



Lycopodites 



Ptilopliytou 



Acanthopliyton 



Lepidostrofjus 



Pychnophyllum 



Dictyocortlaites 



Carpolitlies 



Calamités 



Calainodendron 



Asterophyllite.s 



Annularia (fruit bracts). 



Sphenophvlluni 



Pinnularia 



Megalopteris 



Neuropteris 



Nephropteris 



Cardiopteris 



Odontopteris 



Alethopteris 



Pecopteris 



Cal I ipteris 



Hymenophyllites 



Cardiocarpn.'< 



Trigonocarpus 



Antholithes 



Deduct genera based 



on woody tissue. 



Survivals from older sub-fauna. 

 New genera of each sub-fauna. . 



Low'r M'dle Upp'r 



Devonian. 



23 



15 

 5 



27 

 1 



26 

 9 



10 



17 



Little 

 River 

 Group. 



X ? 



30 

 1 



29 



20 



Carboniferous. 



Low'r M'dle 



15 



24 

 1 



23 



Upp'r 



13 



