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Alsatites liasicus
788
Type
Zone
Age range
201.1–200.2
Ma
International Timescale
Early Jurassic
Hettangian
Ammonite Zonation - Boreal
Schlotheimia angulata
Alsatites liasicus
Psiloceras planorbis
201.1
201.1
201.0
200.9
200.9
200.8
200.8
200.8
200.7
200.7
200.6
200.6
200.5
200.4
200.4
200.3
200.3
200.3
200.2
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