Subject ASC000104z

The Quarterly journal of the Geological Society of London.
v.58 (1902), Page 273 (1902)
Smithsonian Libraries
BHL Page 41675714

Keywords

geology stratigraphy corrrelation gaps upper lias middle lias england stratigraphical lias England Yorks Somerset Gloucester. West Oxon East Oxon Northants Rutland Yorkshire Worchester Spiriferina-oxygon zone Ferrocrinoid-zone transition-bed Ammonites-serpentinus zone Ammonites-communis zone Ammonites-bifrons zone Leda-ovum geological chart lias of england stratographical Lias upper middle STRATIGRAPHICAL TABLE GAPS IN UPPER AND MIDDLE LIAS ENGLAND.

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