Mississippian
Geologic records evidence of abundant fossil is 540 Million Years ago during the Paleozoic Era.
Mastadons lived during the last Ice Age. Specifically, they were around during the Cenozoic era, which was nearly 1.8 million years ago.
Apatosaurus lived between 154 and 150 million years ago. This was during the Kimmeridgian and Tithonian stages of the Jurassic period.
They all lived during the Cretaceous period.
Its geologic record puts it during the late Pleistocene, meaning it first appeared between 1 million and 12,000 years ago. It is the product of a violent Strombolian eruption.
There are large salt deposits under the state of Kansas due to the Wellington Formation deposited during the Permian Period, about 275 million years ago.
your mama was born
Cathode
The Women's vagina. :^)
Stegosaurus existed from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period. The Jurassic was the second period of the Mesozoic era.
The second geologic era is the Mesozoic Age. This would have been 248 million to 65 million years ago. Mesozoic means "middle life". This time would have been when dinosaurs roamed the earth during the Cretaceous period. Periods during this era included both the Jurrassic as well as the Triassic periods.
your mama was born