386 New York State Museum 



the corals are Favosites basalticus, F. emmonsi, F. epi- 

 dermatus, F. hemispheric us, Zaphrentis prolifica, Z. gi- 

 gantca, Z. comiculum, Cyathophyllum robustum, Phillips- 

 astraea sp., Acervularia sp. etc. ; brachiopods are repre- 

 sented by such large forms as Amphigenia elongata, the 

 index fossil of the Onondaga, Spirifer divaricatus, Stro- 

 phonella ampla, Stropheodonta hemispherica and other 

 forms as Spirifer duodenarius, Spirifer acuminatus, Mer- 

 istella nasuta, Pentagonia unisulcata, Athyris spiri- 

 fer aides, Atrypa reticularis, A. spinosa, Pentamerella 

 arata, Delthyris raricostata; pelecypods by Avicidopecten 

 parilis, Lyriopecten dardanus, Megambonia cardiformis,/ 

 Pie thorny tilus ponderosa; gastropods by Platyceras 

 dumosum, P. undatum, P. symmetricum, Diaphorostoma 

 lineatum, Pleurotomaria decewi, P. arata, Phanerotinus 

 laxus, Euomphalus decewi; cephalopods by Gyroceras 

 (Ryticeras) trivolve, G. undulatum, G. matheri, G. (Hal- 

 loceras) paucinodum, Poterioceras eximium, Dawsonoceras 

 thoas; pteropods by Tentaculites scalariformis; trilobites 

 by Dalmanitcs (Odontocephalus) selenurus, Dalmanites 

 (Odontochile) calypso, Lichas (Conolichas) eriops, 

 Proetus crassimarginatus. A number of species of crin- 

 oids are found in the limestone, Arachnocrinus bulbosus, 

 Craterocrinus ruedemanni, Dolatocrinus speciosus etc. 

 and fish remains occur. 



The Kanouse sandstone (Kiimmel '08), occurring in 

 the Devonian outlier in southeastern New York (Orange 

 county) and New Jersey and named from the mountain 

 in northern New Jersey, is considered of Ulsterian age 

 (from Ulster county) and carries Onondaga fossils. The 

 formation has a thickness of 215 feet. 



The Hamilton beds were named originally from typical 

 exposures at West Hamilton, Madison county (Vanuxein 



