Step 3 : Using the Venn diagram of the groupings just completed as a guide, draw your cladogram to illustrate the ancestry of these animals. The diagram should reflect shared characteristics as time proceeds. An example is shown below.
The Squares along the line represent the derived characteristics and when in time they arose. Each line shows where each animal branched off in evolutionary time. All animals are shown at the same level (along the top) to indicate that they all still exist, none have gone extinct.
The Squares along the line represent the derived characteristics and when in time they arose. Each line shows where each animal branched off in evolutionary time. All animals are shown at the same level (along the top) to indicate that they all still exist, none have gone extinct.