have successively occupied the surface of the Earth. 79 



Adiautites 6 



Sphenopteris 30 



Hymenophyllites 6 



Trichomanites 1 



Taeniopteris 2 



Desmophlebis 3 



Alethopteris 13 



Callipteris 4 



Pecopteris 80 



Coniopteris / 



Cladopblebis 8 



Oligocarjiia 1 



Scolicopteris 1 



Chorionopteris 1 



Asterocarpus 3 



Hawlea 1 



Senfteubergia 1 



Woodwartlites 1 



Lonchopteris 2 



Glossojiteris , 2 



Schizopteris 1 



? Aphlebia 1 



** Petioles. 



Zygopteris 1 



Selenopteris 4 



GjTopteiis 1 



Anachoropteris 2 



Ptilorachis 1 



Diplophacelus 1 



Calopteris 1 



Tempskia 4 



*** Stems. 



Caulopteris 5 



Protopteris 2 



Zippea 1 



Asterochlaena 1 



Karstenia 2 



LYCOPODIACEiE. 



§ 3. hepidodendrece . 



Lepidodendron 40 



Lepidostrobus 8 



Lepidopbyllum 8 



UlodencUon 9 



Megaphytum 4 



Halonia 3 



Lejiidophloios 3 



Knorria 2 



§ 4. PsaroniecB. 



Psaronivis 30 



Heterangium 1 



Diplotegiiim 1 



EaUISETACE^, 



Equisetites 3 



Calamites 10 



Gymnospermous Dicotyledons. 

 ASTEROPHYLLITES. 



Calamodendron 6 



Asterophyllites 20 



Hippurites 1 



PbyUotheca 1 



Annularia 5 



SphenophyUum 8 



SiGILLARIEjE. 



Sigillaria 35 



Stigmaiia 6 



Syringodendi-on 2 



Diploxylon 1 



? Ancistrophyllum 1 



? Didymophyllum 1 



NCEGGERATHIE^. 



Nceggerathia 10 



Pycnophyllum 2 



Cycade^. 



? Colpoxylon 1 



? MeduUosa 2 



Conifers. 



Walchia 4 



Peuce , 1 



Dadoxylon 7 



Palaeoxylon 2 



Pissadeudron 2 



Angiospenuous Dicotyledons. 

 None. 



Monocotyledons. 



Very doubtful and imperfectly 

 knowTi. 



Musajites primsevus 1 



Cromyodendron radicans 1 



Palmacites carbonigenus 1 ^y 



leptoxylon / 



Myeloxylon (McduUosa elegans) 1 



Musocarpum 2 



Trigonocarpum 



7 



By summing up these numbers, and avoiding at the same 



