how life began - collins
TRANSCRIPT
PRESENTDAY 550
First creatureswith skeletons
440First �sh
340First spiders
280First reptiles
150First birds
145First �owering
plants
55First grasses
35First monkeys
4First humans
205First dinosaurs
How life began
Look at the diagram to see how many million years ago each plant or creature developed.
© Collins Bartholomew Ltd 2015