(image source: https://www.sciencephoto.com/media/934675/view/hallucigenia-sparsa-invertebrate-illustration)

Host Matthew Donald and guest co-host Natasha Krech discuss Hallucigenia, the most WTF species ever featured on this podcast, and that's saying something. From the Mid Cambrian, this 1-inch invertebrate may have been a velvet worm, an early arthropod, or a more bygone creature, but one thing it certainly was is... actually, I have no idea. Seriously, what the hell is this thing?!

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