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Anagymnotoceras varium
764
Type
Zone
Age range
246.3–244
Ma
International Timescale
Middle Triassic
Anisian
Ammonite Zonation - Boreal
Eogymnotoceras deleeni
Anagymnotoceras varium
Lenotropites caurus
246.4
246.3
246.2
246.1
246.0
245.9
245.8
245.7
245.6
245.5
245.4
245.3
245.2
245.1
245.0
244.9
244.8
244.7
244.6
244.5
244.4
244.3
244.2
244.1
244.0
243.9
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