钳子
发表于 2025-3-25 07:04:52
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Amorous
发表于 2025-3-25 07:30:11
When and Why Nature Gained Angiosperms,ntinues to remain a mystery. However, we continue to gain knowledge about their early evolution and history. It seems increasingly probable that their origin is associated with climatic and environmental changes in tropical areas and was coeval with the breakup of the supercontinent Gondwana. The fi
hereditary
发表于 2025-3-25 13:09:22
Postcards from the Mesozoic: Forest Landscapes with Giant Flowering Trees, Enigmatic Seed Ferns, anermian boundary at 252 million years ago, was filled with forests. Like today, the forest was the dominant terrestrial ecosystem. The trees that created the forest habitat, along with the other woody plants and ferns in the understory and groundcover, were the primary producers that powered Earth’s
有效
发表于 2025-3-25 17:48:54
Dinosaurs, But Not Only: Vertebrate Evolution in the Mesozoic,h would seem to be intermediary to animals seen today. We would witness a terrestrial vertebrate fauna dominated by dinosaurs of various sizes and diversity, accompanied by many other animal groups that often are overlooked. Current research suggests that many of the main vertebrate clades existing
Osteoporosis
发表于 2025-3-25 21:20:59
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领先
发表于 2025-3-26 01:55:34
Early Mesozoic Nature In and Around Tethys,hys, and was surrounded by a single vast ocean (Panthalassa). Carnivorous archosaurs and crocodile-like reptiles, together with amphibians, populated the land, but these groups witnessed a dramatic change that began during the Late Triassic. This change was the rise of the dinosaurs. During the Jura
粉笔
发表于 2025-3-26 07:56:51
,The End-Permian Mass Extinction: Nature’s Revolution,tal change. This change testifies to a large-scale event that led to the extinction of a significant portion of biodiversity, the most severe mass extinction of all times. This event is called the End-Permian Mass Extinction (EPME) or the Permian–Triassic Mass Extinction and was likely triggered by
节约
发表于 2025-3-26 09:15:18
Long-Lasting Morphologies Despite Evolution: Ferns (Monilophytes) Throughout the Phanerozoic,e have selected the ferns as one acknowledged evolutionary model. Ferns are the most successful cryptogamic plants in geologic history and are known from nearly all fossil floras since their first appearance in the Devonian. Ferns, autotrophic organisms, have colonized nearly all types of continenta
CHOIR
发表于 2025-3-26 15:38:08
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自爱
发表于 2025-3-26 20:49:13
The Coal Farms of the Late Paleozoic,ra, and a southern high paleolatitudinal region named Gondwana. Forested peat swamps, extending over hundreds of thousands of square kilometers, grew across this supercontinent during the Mississippian, Pennsylvanian, and Permian in response to changes in global climate. The plants that accumulated