20 



GEOLOGICAL MEMOIRS. 



II. Upper Silurian. 



1. Medina Sandstone. 

 Harlania Hallii, Goeppert. Fucoides auriformis, Hall. 



2. Clinton Group. 

 Chondrites antiquus, Brongn. sp. 



II. DEVONIAN ROCKS. 



Europe. 



Older or Rhenish Grauwacke 



(Spirifer-sandstone) . 

 Haliserites Dechianus, Goepp, 

 Chondrites antiquus, Brongn. sp. 



Nessigii, F. A. Roem. sp. 



Sagenaria, sp. 



Delesserites antiquus, Goepp. 

 Asterophyllites Roemeri, Goepp. 

 Daetylopteris Stiehleriana, Goepp. 



America, 



1. Hamilton Group. 

 Knorriae, sp. 

 Sagenarise, sp. 



2. Chemung group. 

 Sphenopteris Halliana, Goepp. 

 Sagenaria chemungensis, Goepp. 

 Sigillaria Vanuxemi, Goepp. 



Cypridina Schist. 

 Confervites acicularis, Goepp. Sphserococcites lichenoides, Goepp, 



III. CARBONIFEROUS LIMESTONE. 



Asterophyllites elegans, Goepp. 

 Calamites transitionis, Goepp. 

 Zygopteris tubicaulis, Goepp. 

 Gyropteris sinuosa, Goepp. 

 Sphenopteris refracta, Goepp. 

 Cyclopteris dissecta, Goepp. 



Bockschii, Goepp. 



frondosa, Goepp. 



, sp. (fragment). 



Lycopodites acicularis, Goepp. 

 Cardiocarpon punctulatum, Goepp. and 



Berger. 

 Lepidodendron squamosum, Goepp. 

 Noeggerathia obliqua, Goepp. 

 Stigmaria ficoides, k. Anabratha, Goepp. 

 Protopitys Bucheana, Goepp. 

 Araucarites Beinertianus, Goepp. 



IV. POSIDONOMYA SCHIST*. 



Anarthrocanna stigmarioides, Goepp. 

 *Bornia scrobiculata, Sternb. 



Sphenopteris pachyrrachis, Goepp. 



Hymenophyllites, sp. (fragment). 



Odontopteris imbricata, Goepp. 



Cyclopteris, sp. (fragment). 

 *Lepidodendron hexagonum, Goepp. 



Sagenaria depressa, Goepp. 



*Sagenaria Veltheimiana, Sternb. sp. 



Roemeriana, Goepp. 



geniculata, F. A. Roem. 



Knorria polyphylla, F. A, Roem. 



Jugleri, F. A. Roem. 



Goepperti, F. A. Roem. 



megastlgma, F. A. Roem. 



Stigmaria ficoides, \. Isevis, Goepp. 



* According to F. A. Roemer the newer grauwacke beds alternate with the Posi- 

 donomya-schist. Von Dechen, however, does not take this view. Dr. Goeppert, 

 therefore, sef)arates these formations, and has marked with an asterisk the species 

 that are common to the two. 



