Tirohia te whiti i raro nei, ka whakautu i te patai i muri mai i te reo ano o te whiti: Passage: Among docodonts, Castorocauda appears to have been related to Krusatodon and Simpsonodon, both European animals. He tohu pea tenei i uru ai a Uropi me Ahia ki te whakawhitinga kararehe i te Middle Jurassic. Ka wehehia nga whenua e rua e te Turgai Strait. Patai: He whanaunga a Castorocauda ki nga docodants e rua?
Ko te Krusatodon me te Simpsonodon