The earliest era of the Phanerozoic Eon, marked by the presence of marine invertebrates, fish, amphibians, insects, and land plants.
from 544 million to about 230 million years ago
The large division of geologic time between the Precambrian and Mesozoic Eras. It began about 570 million years ago and lasted until about 245 million years ago.
major division of geological time lasting from 570 to 240 million years ago
An era of geological time, from the end of the Precambrian Era to the beginning of the Mesozoic Era, about 570 million to 225 million years ago.
It is a period of geological time which extends from 545 to 245 million years ago. It is subdivided into the Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian Periods.
Includes the time from about 570-245 million years ago. more details...
The period of time beginning 570 million years ago ending 245 million years ago; falls between the Proterozoic and Mesozoic Eras and is divided into the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian Periods. PICTURE
A span of geologic time covering from 570 to 225 million years ago. Also called the “Age of Invertebrates.
The time period from 570 billion years ago to 225 million years ago. This block of time saw the beginnings of life.
An era between 600 and 300 million years ago when the areaís climate was more tropical.
540-248 million years ago
A geologic time period that lasted from about 570 to 250 million years ago. The 320-odd million years of the Paleozoic era saw many important events, including the evolution of fish, reptiles, insects, and vascular plants; no less than two distinct ice ages; and, possibly, the formation of the supercontinent of Pangaea.
570 to 225 million years ago, the Appalachian and Acadian mountains were formed. PERCOLATE the repeated downward passage of water through a medium such as topsoil.
The Paleozoic (meaning "ancient life") ended with the largest mass extinction in geological history and was followed by the Mesozoic Era, the time of the dinosaurs.
245 to 570 million years ago.
The Paleozoic era (540 to 245 million years ago) saw an explosion of new life forms. It ended with the largest mass extinction in history and was followed by the Mesozoic Era.
