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Flowering plants, also known as angiosperms, spread during this period, although they did not become predominant until near the end of the period (Campanian age). [18] Their evolution was aided by the appearance of bees; in fact angiosperms and insects are a good example of coevolution.
The fossil history of flowering plants records the development of flowers and other distinctive structures of the angiosperms, now the dominant group of plants on land.The history is controversial as flowering plants appear in great diversity in the Cretaceous, with scanty and debatable records before that, creating a puzzle for evolutionary biologists that Charles Darwin named an "abominable ...
The basal bird Archaeopteryx, from the Jurassic, is well known as one of the first "missing links" to be found in support of evolution in the late 19th century. Though it is not considered a direct ancestor of modern birds, it gives a fair representation of how flight evolved and how the very first bird might have looked.
However, angiosperms appear suddenly and in great diversity in the fossil record in the Early Cretaceous (~130 mya). [48] [49] Claimed records of flowering plants prior to this are not widely accepted. [50] Molecular evidence suggests that the ancestors of angiosperms diverged from the gymnosperms during the late Devonian, about 365 million ...
The KTR is traditionally considered to have started in the Early Cretaceous and continued to the Late Cretaceous, [3] from around 125 Mya to 80 Mya. [2] Alternatively, according to Michael Benton, the ATR is proposed to have lasted from 100 Ma, when the first highly diverse angiosperm leaf floras are known, to 50 Ma, during the Early Eocene Climatic Optimum, by which point most crown lineages ...
Many modern mammal groups begin to appear: first glyptodonts, ground sloths, canids, peccaries, and the first eagles and hawks. Diversity in toothed and baleen whales. 33 Ma Evolution of the thylacinid marsupials . 30 Ma First balanids and eucalypts, extinction of embrithopod and brontothere mammals, earliest pigs and cats. 28 Ma
Bird tracker: Most-sighted backyard birds in 50 states and D.C. during January Sue Flocco looks through her binoculars at birds at Carolina Beach State Park on Dec. 20, 2023.
The Jurassic was the height of archosaur diversity, and the first birds and eutherian mammals also appeared. Some have argued that insects diversified in symbiosis with angiosperms, because insect anatomy, especially the mouth parts, seems particularly well-suited for flowering plants. However, all major insect mouth parts preceded angiosperms ...