Ka dibna ka jawaab su'aasha ka dib luqadda la mid ah sida marinka: Passage: Ka mid ah docodonts, Castorocauda u muuqataa in ay la xiriira Krusatodon iyo Simpsonodon, labadaba xayawaanka Yurub. Tani waxay noqon kartaa caddayn in Europe iyo Asia maray is-dhaafsiga faunal ee Jurassic Dhexe. Labada qaaradood ayaa markii dambe la kala saari lahaa by Strait Turgai. Su'aal: Castorocauda la xiriira labada docodants?
Krusatodon iyo Simpsonodon