Nature & Environment
Life in the Palaeozoic
...simple-branching stem. (b) One of the earliest known land animals - a spider-like creature (4 mm long including legs) from Silurian rocks in Shropshire, England...Life in the Palaeozoic: 4.1 Trilobites - As we've seen, the Cambrian explosion left the seas teeming with a huge variety of animals. In the following activity you will study some of the marine life at one...