I understand that brine shrimp are living fossils... I deal with them all the time. And I'm with you on the body plan discusiion, and the significance of turning off genes for extra limbs. OK there.
But I don't believe it's splitting hairs to say that your "ancestral" statement is equivalent to saying "In terms of primatology, the tree shrew is ancestral to the human." Despite our common lineage with prosimians, that's not a comment you'd make, is it?
I don't mean to be picky, but given how contentious this subject can be, shouldn't we be more careful in our phrasing?
