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.
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 , 4 M to 6 M years after the extinction and was not complete until 30 M 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 .
When did recovery of these diverse animals begin?
When did recovery of these diverse animals begin ?
mid-Triassic
mid-Triassic