Search the whole site
Search for events relating to:
Year:
For exact match use "quotation marks"
Embed
Share
Timelines List
Text search
Related images
HistoryWorld
Link
Map
Click the icons to visit linked content. Hover to see the search terms
Life sciences timeline
c. 3 billion years ago
Single-celled water creatures, such as algae, begin the 2-billion-year process of evolving into slightly more complex forms of life
c. 1 billion years ago
Sponges and jellyfish drift in the sea, to be joined later by more purposeful shrimps and lobsters
c. 500 million years ago
The earliest known creature with a skeleton evolves as a form of fish
c. 400 million years ago
Plants, previously living only in the seas and rivers, begin to establish themselves on land
c. 350 million years ago
Insects become the first creatures capable of living their full life span out of the water - and the first to master flight
c. 340 million years ago
Amphibians develop lungs, enabling them to live on land as well as in the water
NEXT
Historyworld Home
|
About us
|
Attribution & copyright