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[–] 3 points 10 months ago

They do just have the one plate that has all the spikey parts on it, but that's not really the reason it bites round holes. It's that it uses its mouth as a suction and then chomps through the part it's attached to. Of course the shape of the tooth/teeth is related. That's not the mystery they were looking to solve though, it was when and where they feed.

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