It's now time to dig into the clade Gnathifera, which contains three phyla. The first of these is Gnathostomulida, which houses the jaw worms. These organisms, as you might guess, have impressive microscopic jaws. Because they are interstitial animals they were not discovered until the 20th century, but we have learned a lot about them, so let's get a closer look!

Script by Ryan Helcoski and Dr. Wolfgang Sterrer: https://www.researchgate.net/profile/...

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