Recent research indicates that the specialized animals that formed complex ecosystems, with high biodiversity, complex food webs and a variety of niches, took much longer to reestablish, recovery did not begin until the start of the mid-Triassic, 4M to 6M years after the extinction and was not complete until 30M years after the Permian–Triassic extinction event. Animal life was then dominated by various archosaurian reptiles: dinosaurs, pterosaurs, and aquatic reptiles such as ichthyosaurs, plesiosaurs, and mosasaurs. COUNT 5
QSN1 What type of animals took longer to reestablish? ANS1 specialized animals QSN2 How long after the Permian-Triassic extinction did animal recovery take to completion? ANS2 30M years QSN3 When did recovery of these diverse animals begin? ANS3 mid-Triassic QSN4 What dominated animal life in the Triassic? ANS4 reptiles QSN5 How many years after the extinction did animal recovery begin? ANS5 4M to 6M