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*’nephrozoa’ is a clade of ‘basal bilaterians’ in which the ‘deuterostomes’, and ‘protostomes’ (incl. the ‘basal arrow worms’) emerged as sister clade of the ‘xenacoelomorpha’*
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(the majority of ‘animals’ more complex than ‘jellyfish’ and other ‘Cnidarians’ are split into 2 groups, the ‘protostomes’ and ‘deuterostomes’)
(‘Chordates’ (which include all the ‘vertebrates’) are ‘deuterostomes’)
(it seems very likely that the 555 million year old Kimberella was a member of the ‘protostomes’)
(if so, this means that the ‘protostome’ and ‘deuterostome’ lineages must have split some time before Kimberella appeared — at least 558 million years ago, and hence well before the start of the ‘cambrian’ 541 million years ago)
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥