-
Dec 1, 1000
Marine Invertebrates
This is when the fossil record shows the first appearances of Marine Invertibrates. 570 million years ago -
Period: Dec 1, 1000 to Dec 1, 1325
Paleozoic Era
-
Dec 1, 1030
Fish
Evidence of the first fish from the fossil record tells us that they appeared on Earth about 440 million years ago -
Dec 1, 1170
Amphibians
Evidence of the first amphibians on Earth appears in the fossil record about 400 million years ago. -
Dec 1, 1210
Insects
The first Insects appear in the fossil record around 360 million years ago. -
Dec 1, 1220
Reptiles
The evidence of the first reptiles appears in the fossil record about 350 million years ago. -
Period: Dec 1, 1325 to Dec 1, 1504
Mesozoic Era
-
Dec 1, 1362
Dinosours
Evidence of the first dinosaurs appears on the fossil record about 208 million years ago. -
Dec 1, 1426
Mammals
The first mammal fossils seen are about 144 million years old. -
Period: Dec 1, 1504 to
Cenozoic Era
-
Dec 1, 1570
Humans
There is evidence of the first modern humans evolving between 400,000 and 250,000 years ago