What is the Lower Jurassic?
Q: What is the Lower Jurassic?
A: The Lower Jurassic is the first epoch in the Jurassic period that began 201.3 million years ago and ended at 174.1 million years ago.
Q: How is the Jurassic period divided?
A: The Jurassic period is divided into three parts: Lower, Middle, and Upper.
Q: When did the Lower Jurassic start?
A: The Lower Jurassic started after the end-Triassic extinction event at 201.3 million years ago.
Q: What rocks form the Lias group in Europe?
A: The Lias group in Europe consists mostly of limestone, with some clays and siltstone.
Q: Where did Mary Anning do much of her work?
A: Mary Anning did much of her work on the Dorset Jurassic Coast in the formation of the Lias group.
Q: What happens to the mudstones in the earliest Jurassic?
A: The mudstones in the earliest Jurassic (Blue Lias) give way to carbonate rocks as the water deepens in the Middle Jurassic.
Q: When were dinosaurs on the Earth?
A: Dinosaurs were on the Earth during the Jurassic period, which was one of the time periods when they lived.
