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Cretaceous polar forests were temperate forests that grew at polar latitudes during the final period of the Mesozoic Era, known as the Cretaceous Period 145–66 Ma. [1] During this period, global average temperature was about 10 °C (18 °F) higher and carbon dioxide (CO 2 ) levels were approximately 1000 parts per million (ppm), 2.5 times the ...
The Hell Creek Formation was a low floodplain at the time before the sea retreated, and in the wet ground of the dense woodland, the diversity of angiosperms and conifers were present. An endless diversity of herbaceous flowering plants, ferns and moss grew in the forest understory.
The Cretaceous is characterized by warm global temperatures caused by the high amounts of carbon dioxide and possibly methane greenhouse gases in the atmosphere. This caused a lack of permanent ice coverage in the polar regions, though the carbon dioxide level dropped between 115 and 66 million years ago (mya), possibly allowing some permanent ice cover.
Nestled in Olympic National Park in western Washington state, Hoh Rain Forest is like stepping into a green fantasy world with its moss-covered maples, vibrant ferns, and coniferous trees such as ...
Araucaria (/ æ r ɔː ˈ k ɛər i ə /; original pronunciation: [a.ɾawˈka.ɾja]) [2] is a genus of evergreen coniferous trees in the family Araucariaceae.While today they are largely confined to the Southern Hemisphere, during the Jurassic and Cretaceous they were globally distributed.
Savernake Forest stands on a Cretaceous chalk plateau between Marlborough and Great Bedwyn in Wiltshire, England. Its area is approximately 4,500 acres (18 km 2; 7.0 sq mi). [1] Most of the forest lies within the civil parish of Savernake. It is privately owned by the Marquess of Ailesbury and his son the Earl of Cardigan, and is administered ...
Geinitzia is an extinct genus of conifers, with an uncertain position within the group. [1] Species belonging to the genus lived in the late Cretaceous and have been found in Argentina [2] and Europe. [3] [4]
Araucariaceae is a family of conifers with three living genera, Araucaria, Agathis, and Wollemia.While the family's native distribution is now largely confined to the Southern Hemisphere, except for a few species of Agathis in Malesia, it was formerly widespread in the Northern Hemisphere during the Jurassic and Cretaceous periods.