Mammals originated during the period-
Mammals originated during the period-
The correct option is C Cretaceous
· Although the Triassic Period is often remembered as the time when dinosaurs and other archosaurs rose to dominance, mammals and their ancestors also played an important role. In fact, these synapsids (once called "mammal-like reptiles”) were very abundant in the early Triassic world.
· The Mesozoic Era - which includes the Triassic, Jurassic, and Cretaceous - is often considered a dino-dominated era with a scattering of tiny, nocturnal, insect-eating mammals. But we're increasingly finding that that's just not the case.
· The only living non-eutherian mammals are monotremes and marsupials. The earliest fossil placental mammals are from the Cretaceous. Any member of the extinct mammalian group Multituberculata. Multituberculates were the most diverse and common mammals of the Mesozoic
· The Permian is a geologic period and system which extends from 298.9 ± 0.15 to 252.17 ± 0.06 million years ago. It is the last period of the Paleozoic, following the Carboniferous and preceding the Triassic of the Mesozoic.
Cretaceous
· Although the Triassic Period is often remembered as the time when dinosaurs and other archosaurs rose to dominance, mammals and their ancestors also played an important role. In fact, these synapsids (once called "mammal-like reptiles”) were very abundant in the early Triassic world.
· The Mesozoic Era - which includes the Triassic, Jurassic, and Cretaceous - is often considered a dino-dominated era with a scattering of tiny, nocturnal, insect-eating mammals. But we're increasingly finding that that's just not the case.
· The only living non-eutherian mammals are monotremes and marsupials. The earliest fossil placental mammals are from the Cretaceous. Any member of the extinct mammalian group Multituberculata. Multituberculates were the most diverse and common mammals of the Mesozoic
· The Permian is a geologic period and system which extends from 298.9 ± 0.15 to 252.17 ± 0.06 million years ago. It is the last period of the Paleozoic, following the Carboniferous and preceding the Triassic of the Mesozoic.
