simple plants.
The oxygen level was 30% higher than today, and the carbon dioxide level was 7 times as high as it was in modern times before we began to burn fossil fuels.
The stone age.
Many of earth's marine invertebrates were extinct, and many other species that had evolved on earth were extinct as well, so basically the ecosystem was "rebuilding" after the Permian mass-extinction.
The geologic record shows eruptions began during the Pleistocene period (approx. 1.8 million to 10,000 years ago). The most recent in 1985. See the related links below for more information.
The Mas or Carnival tradition began in the late eighteenth century by French plantation owners held balls and carnivals prior to the beginning of Lent. Since the slaves were forbidden from participating in the planters' celebrations, they developed their own known as 'Canboulay,' or 'burnt caramel.' Calypso music which used to be known as Kaiso also began during this period.
During the middle silurian the climate was much warmer, it was though of as a period where the climate became more stable, ending the previous pattern of random climatic fluctuations. A new greenhouse phase began, leading to a rise in global sea level form ice melt. However, in coastal areas where there was warm shallow waters, the conditions led to large evaporite deposits, although this was largely exclusive to equatorial regions. In this instance, plants that had lived in water had to adapt to life on land or die off.
A mass extinction event/ice age marked the end of the Ordivician Period. The climate, location of landmasses, and number and diversity of species had changed dramatically since the beginning of the period. When the changes that were occurring during the mass extinction event leveled out, a new period began.
The Paleozoic Era began. Development of fish amphibians, insects and reptiles. Cambrian Period Ordovician period Silurian Period. Devonian Period Mississippian Period Pennsylvanian Period Permian Period
If you mean animals as in insects (arthropods), they came in around the Devonian period of the Paleozoic era If you mean animals as in fish, amphibians etc then they came in at the same time as the arthropods
The Pax Romana began during the reign of Augustus.
The Silurian period occurred from 443 million years ago until 416 million years ago. It saw the emergence of animals such as coral and fish that began quickly populating the oceans, and plants like the fern first appeared on the planet.
Renaissance art began during the Renaissance period. The Renaissance art period began in 1150 and lasted until about 1600.
It is the Enlightenment Age
The period during which life began to move on land was the Ordovician Period. It was during this time that evidence of plant spores from living fossils were found on land.
use permanent performance spaces.
Pangaea began to break apart during the Early to Middle Jurassic period, about 175 million years ago.
The custom of knighthood began in the medieval times.