. The Quarterly journal of the Geological Society of London. J. W Tutcher. Photo. PERISPHINCTES EASTLECOTTENSIS; sp. nov. * 0-7 vol. 69.] upper jprassic strata of england. 431 Discussion. Dr. A. Mokley Davies said that all who were working at theUpper Jurassic rocks would welcome this contribution to thedifficult subject of their zonal correlation. His first comment, zonal table exhibited was that it proved more clearly thanbefore that the term Oxfordian would have to be several of the zones on the Authors list could at once berecognized, others had unfamiliar names, and
. The Quarterly journal of the Geological Society of London. J. W Tutcher. Photo. PERISPHINCTES EASTLECOTTENSIS; sp. nov. * 0-7 vol. 69.] upper jprassic strata of england. 431 Discussion. Dr. A. Mokley Davies said that all who were working at theUpper Jurassic rocks would welcome this contribution to thedifficult subject of their zonal correlation. His first comment, zonal table exhibited was that it proved more clearly thanbefore that the term Oxfordian would have to be several of the zones on the Authors list could at once berecognized, others had unfamiliar names, and among these he failedto identify such well-marked faunal horizons as those of Amcebo-ceras (alternans zone) and Physodoceras (orthocera zone). Thepaper would, however, doubtless remove these difficulties, andexplain why other index-fossils had been chosen. Dr. F. L. Kitchin expressed satisfaction that he had givenencouragement to the Author to lay before the Society the firstfruits of his work in England. He considered that the paper madea great advance i
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectgeology, bookyear1845
