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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 ...
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.
Openclipart, also called Open Clip Art Library, is an online media repository of free-content vector clip art.The project hosts over 160,000 free graphics and has billed itself as "the largest community of artists making the best free original clipart for you to use for absolutely any reason".
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 ...
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.
In the Sierra Nevada mountain range of the western United States, the mixed conifer forest is found at elevations of 1,200–5,500 feet (370–1,680 m) in the north, 2,000–6,500 feet (610–1,980 m) in central areas, and 2,500–9,000 feet (760–2,740 m) in the south. [1]
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 family name Hirmeriellaceae is a junior synonym of Cheirolepidiaceae. [11] Some authors have suggested Hirmeriellaceae is the valid name for the family, due to nomenclatural issues with the original Cheirolepis genus, which is a junior homonym of a member of Asteraceae , with Cheirolepidium suggested to be an invalid replacement.