http://resource.geosciml.org/classifier/ics/ischart/BaseUpperPennsylvanianSP
label | Stratotype Point Base of Upper Pennsylvanian | |||||||
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comment | candidates are in southern Urals, southwest USA and Nashui (south China). | |||||||
correlation event | Fusulinid FAD Protriticites, which is near ammonoid FAD Eothalossoceras. Alternative (higher) Base of is fusulinid FAD Montiparus montiparus, which is near conodont FAD Idiognathodus sagittalis. Age given here is the higher version; the lower one is about 1 myr older. | |||||||
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see also | index.html original |