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Scaphites hippocrepis
947
Type
Zone
Age range
83.64–82.7
Ma
International Timescale
Late Cretaceous
Campanian
Santonian
Ammonite Zonation - Western Interior
Scaphites hippocrepis II
Scaphites hippocrepis
Scaphites leei
83.7
83.6
83.5
83.5
83.5
83.4
83.3
83.3
83.3
83.2
83.2
83.1
83.0
83.0
83.0
82.9
82.8
82.8
82.8
82.7
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