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MBL March Madness: Ecdysozoan Division

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MBL March Madness: Ecdysozoan Division

Ecdysozoans are the largest group within the animal kingdom and comprises arthropods (insects, spiders, and crustaceans), as well as nematodes such as roundworms. All organisms in the Ecdysozoan superphylum have an exoskeleton and shed or molt that cuticle layer in order to grow. Unlike the animals in the Deuterostome Division, organisms within Ecdysozoa all develop

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MBL March Madness: Sea Spider

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MBL March Madness: Sea Spider (Pycnogonida pantopoda)

Part of in the order Pantopoda, which means “all legs,” sea spiders are also known as pantopods. Although they are a member of the arthropod class that includes horseshoe crabs, terrestrial spiders, and terrestrial scorpions, they’re not really “spiders.” Sea spiders are the oldest members of the Chelicerata and their legs have eight segments, which

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