permian period

الإنجليزية - التركية

تعريف permian period في الإنجليزية التركية القاموس.: (Coğrafya) permiyen dönem

الإنجليزية - الإنجليزية

تعريف permian period في الإنجليزية الإنجليزية القاموس.: geologic period during the Paleozoic Era when a mass extinction occurred (killing approximately 95% of all life forms); Interval of geologic time, 290-248 million years ago. The last of the six periods of the Paleozoic Era, it follows the Carboniferous Period. During the Permian, the continents joined to form a single supercontinent, Pangea. Hot, dry conditions prevailed almost everywhere, and deserts were widespread. Life evolved as a continuation of established lines. Marine invertebrates evolved into several lineages. Marine and freshwater fish and amphibians thrived. Reptiles evolved into three distinct groups: the cotylosaurs, the pelycosaurs, and the therapsids. Land plants evolved from ferns and seed ferns to conifers and adapted to drier and well-drained land conditions. Toward the close of the Permian, many forms of life suffered mass extinction, whose causes are unknown
The Permian period: permian

permian period

الواصلة

Per·mi·an pe·ri·od

pırmiın pîriıd

/ˈpərmēən ˈpərēəd/ /ˈpɜrmiːən ˈpɪriːəd/

السابق

المفضلات