Decussated CNS?

Harry Erwin erwin at
Thu Feb 25 12:55:40 EST 1993

Examination of tunicate tadpoles would be appropriate to help answer this
question. Has anyone done the necessary work? Back in 1968, Romer
speculated that the chordate CNS was an innovation of the larval stage of
a sessile filter-feeding adult. 

Harry Erwin
Internet: erwin at

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