-
Cenozoic (Paleogene)
Paleogene
Time frame: 65.5 million years ago
Length: 42.47 million years -
Cenozoic (Quaternary)
Time Frame: 2.59 million years ago to present. Length: 2.59 million years -
Mesozoic (Jurassic)
Time frame: 199.6 million years ago to 145.5 million years ago
Length: 54.1 million years. -
Mesozoic (Triassic)
Length: