Carboniferous System of the United States. 419 



Annularia, Artisia, Asterophyllites, Aspidaria, Asplenites, Car- 

 diocarpon, Carpolites, Casea, Calamites, Cordaites, Cyclo- 

 pteris, Callipteris, Coniopteris, Cannopbyllites, Cyatheites, Cre- 

 matopteris, Cyperites, Dictyopteris, Equisetnm, Flabellaria, 

 Halonia, Hemitelites, Ilippnrites, Ilyraenophyllites, Knorria, 

 Lepidodendron, Lepidophlois, Lepidophyllum, Lycopodites, 

 Nephropteris, Neuropteris, Noeggeratliia, Odontopteris, Peco- 

 pteris, Pinnularia, Pycnophyllnm, Polysporia, Pachypbyllum, 

 Poacites, Rhabdocarpns, Rhizolithes, Sagenaria, Sigillaria, 

 Splienophyllum, Stigmaria, Staphilopteris, Stigmatocanna, 

 Syringodendron, Sphenopteris, Scliizopteris, Ulodendron, Whit- 

 tlesey a. 



FORMATION NO. XII. MILLSTONE GRIT COAL CONGLOMERATE. 



Marine Fauna. — Cephalopoda, Gasteropoda, Conchifera. 



PRECAKBONIFERA, PROTO-CARBONIFERA, SUB-CARBONIFERA, PSEDDO- 



CARBONIFEKA. 



Genera of Plants. — Aleopteris, Annularia, Apoxylon, As- 

 terites, Asterophyllites, Bornia ?, Calamites, Cardiocarpon, Car- 

 polites, Cordaites, Cyclopteris, Dadoxylon, Diplotegeiura, Dic- 

 tyopteris, Dymophyllum, Filicites, Fucoides, Halonia, Hyme- 

 nophyllites, Lepidodendron, Lepidophlois, Lepidophyllum, Le- 

 pidostrobus, Lycopodites, Megaphytum ?, Neuropteris, ISTosgge- 

 rathia, Odontopteris, Pecopteris, Pinnaria, Plnmalina, Pro- 

 taxites, Psilophy ton, Phabdocarpus, Rhizolites, Sagenaria ?, Sela- 

 ginites, Sigillaria, Sphenococcites, Sphenopteris, Splienophyl- 

 lum, Sphenoph^dlites, Staphyllopteris, Sternbergia, Stigmaria, 

 Stiffinatocauna ? 



