Balanoglossus

... (entreropneusta) which is a hemichordate. Hemichordates apparently are an evolutionary link between vertabrates and invertabrates. this acorn worm balanoglossus has gill slits but no notochord? Does a stomochord prove that its an evolutionary link?

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I'm wondering where you came up with this question? I just found out Balanoglossus is a deuterostome and I figure it isn't a 'big' phylum, (it isn't mentioned much in zoology handouts that list phylums) the only other phylum I've heard of being deuterostomes ...

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Scientific classification for Balanoglossus: Kingdom: Animalia Subkingdom: Metazoa Superphylum: Deuterostomia Phylum: Hemichordata Class: Enteropneusta Family: Ptychoderidae --------------- Scientific classification of Homo sapiens: Kingdom: ...

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What's balanoglossus? Whatever it is, if it's a vertebrate, then yes it is in the same phylum as humans.

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Can it be place in a different Phylum than humans?

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