More From encyclopedia.com
Silurian Period , In geologic time , the Silurian Period, the third period of the Paleozoic Era , covers the time from roughly 440 million years ago (mya) until 410 my… Jurassic Period , In geologic time , the Jurassic Period—the middle of three geologic periods in the Mesozoic Era—spans the time from roughly 206–208 million years ago… Paleocene Epoch , In geologic time , the Paleocene Epoch occurs during the Tertiary Period (also sometimes divided or referred to in terms of a Paleogene Period and a… Tertiary Period , In geologic time , the Tertiary Period (also sometimes referred to in terms of a Paleogene Period and a Neogene Period), represents the first geologi… Pennsylvanian Period , Pennsylvanian Period
The Pennsylvanian Period lasted from 320 to 286 million years ago. During the Pennsylvanian Period, widespread swamps laid down… Allosaurus , Jurassic Central period of the Mesozoic era, lasting from 213 to 144 million years ago. In this period there were saurischian and ornithischian dinos…
You Might Also Like
NEARBY TERMS
absolute refractory period