What was the total surface area of the supercontinent where Tritheledontids have lived ?
Tritheledontidae:  Tritheledontids became extinct in the Jurassic period, possibly due to competition with prehistoric mammals such as the triconodonts. Tritheledontidae:  They are known from finds in South America and South Africa, indicating that they may have lived only on the supercontinent of Gondwana.
i don't know