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Is Sanctacaris an arthropod?
Take a good look at the fossil and reconstruction of Sanctacaris. Then compare what you see to the arthropod checklist below.
Does it look like Sanctacaris inherited all of the characters of an arthropod?
Based on the available evidence, is Sanctacaris part of the arthropod lineage?
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- Does it look like it has a hard exoskeleton — like it’s wearing armor?
- Do the visible appendages seem to be jointed? Are there a lot of them?
- Is its body segmented?
If you can answer yes to these questions, then you might hypothesize that Sanctacaris was an arthropod.
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