Professor Dave Explains
Professor Dave Explains
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Introduction to Deuterostomia: The Second Mouth Animals

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February 12, 2025

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It took a very long time, but we are finally finished with the clade Protostomia, or first mouths. Now it's time to tackle Deuterostomia, or second mouths, a clade containing only three phyla. This will take some time, since one of those phyla is Chordata, which contains all the chordates. But let's start simply by going over some basic information regarding the deuterostomes.

Script by Ryan Helcoski

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Introduction to Deuterostomia: The Second Mouth Animals · Professor Dave Explains · Sentinel