Early Jurassic Epoch
Mesozoic:
Jurassic Period		 The Hettangian Age
Early Jurassic Late Triassic Triassic Early Jurassic
Sinemurian Middle Jurassic Cretaceous Mesozoic Timescale

The Hettangian

The Hettangian Age of the Middle Jurassic Epoch: 199.6 to 196.5 million years ago

Phanerozoic
  Mesozoic
    Jurassic
        Early Jurassic
            Hettangian Age
            Sinemurian Age
            Pliensbachian Age
            Toarcian Age
        Middle Jurassic  
        Late Jurassic  
    Cretaceous

The Hettangian Age
 
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