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The first land animal wasn't a slippery amphibian or a giant dragonfly, but a myriapod. Fossil evidence suggests that these wriggly critters climbed out of the water 490-443 million years ago — about 200 million years before the first dinosaurs evolved!
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To explore these groups, just click on the names below:
• insects (including moths)
• chelicerates (including spiders and scorpions)
• crustaceans (including crayfish and barnacles)
• myriapods (including millipedes)
• trilobites (which are now extinct)
Despite their differences, these groups inherited certain "arthropod traits" from a common ancestor, and they are all part of the arthropod lineage.
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