Which of the following era is called age of mammal ?

Key Points

• Geological time refers to that period of Earth's history which can be studied geologically from the rocks.
• Geological time scale is how that timeframe is sub-divided like a calendar for our understanding.
• The fossils that are found in the rock strata helps in establishing the timeline for appearance or disappearance of species.
• It also helps us in studying the timelines of biological evolution of different species.
• It is divided into eons, eras, periods and epochs.

Important Points

• The cenozoic era is known as the 'Age of Mammals'.
• This era indicates the period from 65 million years ago to present day.
• Many significant changes occurred during this era:
  • Mammals became a more prominent life form.
  • Flowering plants diversified to form the present day Angiosperms.
  • Humans evolved.
  • Climatic zones became sharply differentiated.
  • Some of the great mountain ranges were formed like the Himalayas and the Alps.
• The diversification of mammals is largely owed to the continental shifts of landmasses that allowed migration and evolution of species.