http://resource.geosciml.org/classifier/ics/ischart/BaseTithonianSP
comment | candidates are Mt. Crussol or Canjuers (SE France) and Fornazzo (Sicily, S. Italy) | |||||
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correlation event | Near Base of Hybonoticeras hybonotum ammonite zone and lowest occurrence of Gravesia genus, and the Base of magnetic polarity Chron M22An | |||||
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see also | index.html original |