Abstract
Ammonite faunas-zones, review of standard Bathonian (Jurassic) zonal scheme, application to subdivision-correlation of deposits in region north of Bath (England)
H. S. Torrens; The stratigraphical distribution of Bathonian ammonites in central England. Geological Magazine 1969;; 106 (1): 63–76. doi:
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Ammonite faunas-zones, review of standard Bathonian (Jurassic) zonal scheme, application to subdivision-correlation of deposits in region north of Bath (England)