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Anonymous
You're not a zealot are you?(...) No.17043392
You're not a zealot are you?  No.17043392
Post one scientifically heterodox idea/hypothesis/assumption you're fond of.
>>
Anonymous
 No.17043398
 No.17043398
Deuterostomy is basal to Bilateria, only protostomes are monophyletic. Incidentally, chordates are closely related to protostomes while Xenambulacraria is a more distant offshoot.

Related, the ur-bilaterian had a free-swimming larval stage and a sessile adult stage. Many later bilaterians dropped the metamorphosis and developed from the simpler larval stage.
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