What gave rise to the other half?

Fun science article: > The group of fish that moved onto land gave rise to almost half of all vertebrates today, including all amphibians, reptiles, birds, mammals and us.[Tiktaalik )] (https://www.nytimes.com/2022/04/29/science/tiktaalik-fish-fossil-meme.html?unlocked_article_code=7ti2DlOA0M1lke55CLAO0pFYjnNmE4LnCozvVI3tYgYR_wgoVR9AAFObttWR6erNroUSsX6bD5IMBqugIzg-q4e-s3yPOY7jdw43eCfPRTWsL7uI65GvQ7cz3DNuLgsQsmg8FTqV8IsM3rkL1Gt8czKd-e9q7WDl3VaqwZTKbp5VEVsybG8OosPMHo9xaGRwnScHII3ZdOblRfJcGBZpCD71env0RcRWQWnkT0SUA-yyibf4WX-cFMWG4KkULOamum0minS9Nbzk7gXWDcXRB3-rjV1ZoIPFDMEbWGvprfujBild_3j4sp_jJkoVw76p_fc6O038yupGOgykaNa2yPdb4ik&smid=share-url)