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The Arthropod Story Table of Contents   

Is Pikaia an arthropod?

Take a good look at the fossil and reconstruction of Pikaia. Then compare what you see to the arthropod checklist below.

Click on the magnifying glasses to look closer.

Does it look like Pikaia inherited all of the characters of an arthropod?

arthropod characters

Based on the available evidence, is Pikaia part of the arthropod lineage?
Yes    No


Pikaia fossil photo by Chip Clark, Museum of Natural History, Smithsonian Institution; Amphioxus images from BIODIDAC © Jon Houseman