Introduction to Deuterostomia: The Second Mouth Animals

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