📚 node [[urbilaterian]]

Urbilaterian

  • Gave rise to the [[protostomes]] and [[deuterostomes]]
    • Had to be simple based on this
  • Based on Hox genes common to most descendants:
    • The Urbilaterian most likely had 6 segments
    • It most likely had 2 eyes
    • It most likely had a heart
    • Had to be complex based on this
  • Due to lack of fossil evidence, we don't know much for certain about it
📖 stoas
⥱ context