Web20 jul. 2024 · Raup and Sepkoski’s (1982) seminal charting of the numbers of extinctions of “families” of (mostly hard-shelled marine invertebrate) animals through the Phanerozoic … WebBiodiversity. Most of our work on Our World in Data focuses on data and research on human well-being and prosperity. But we are just one of many species on Earth, and our …
Evolution - Diversity and extinction Britannica
WebLife was especially diverse in the oceans—thriving reef ecosystems, shallow-water invertebrate communities, and large swimming predators, including reptiles and squidlike animals. On land, dinosaurs and flying pterosaurs dominated the ecosystems, and birds made their first appearance. Web27 apr. 2024 · The study found: 21% of reptile species are threatened (1,800 individual species); which is higher than for birds, but lower than for mammals and amphibians. … landscape lighting for palm trees
27.4: The Evolutionary History of the Animal Kingdom
WebForty‐six families of marine reptiles are recorded during the Mesozoic. The fossil record of marine reptiles is punctuated by two major extinctions at the Middle‐Late Triassic transition (loss of 64% of families) and at the Cretaceous‐Tertiary boundary (36% of … Web1690 Dodo bird -- extinct from predation by introduced pigs and cats 1768 Stellar’s sea cow -- extinct from hunting for fur and oil 1870 Labrador duck -- extinct from human competition for mussels and other shellfish 1900 … Web19 aug. 2024 · After the Permian extinctions, in the Triassic Period (252-200 million years ago), reptiles evolved at rapid rates, creating an explosion of reptile diversity. This … hemingway encyclopedia