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Further examples of rapid evolutionary radiation can be observed among ammonites, which suffered a series of extinctions from which they repeatedly re-diversified; and trilobites which, during the Cambrian, rapidly evolved into a variety of forms occupying many of the niches exploited by crustaceans today. [11] [12] [13]
In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, alters biotic interactions or opens new environmental niches.
The Cambrian explosion (also known as Cambrian radiation [1] or Cambrian diversification) is an interval of time beginning approximately in the Cambrian period of the early Paleozoic, when a sudden radiation of complex life occurred and practically all major animal phyla started appearing in the fossil record.
The Great Ordovician Biodiversification Event (GOBE), was an evolutionary radiation of animal life throughout [1] the Ordovician period, 40 million years after the Cambrian explosion, [2] whereby the distinctive Cambrian fauna fizzled out to be replaced with a Paleozoic fauna rich in suspension feeder and pelagic animals.
The American naturalist J. T. Gulick (1832–1923) was the first to use the term "divergent evolution", with its use becoming widespread in modern evolutionary literature. [2] Examples of divergence in nature are the adaptive radiation of the finches of the Galápagos, changes in mobbing behavior of the kittiwake, and the evolution of the ...
Psychologists explain the evolutionary role of dopamine, the truth about dopamine detoxes and how you can really put an end to bad habits. ... For example, if you’re trying to quit smoking, CBT ...
For example, it is thought that ammonites were the principal food of mosasaurs, a group of giant marine reptiles that became extinct at the boundary. [40] The K–Pg extinction had a profound effect on the evolution of life on Earth.
14 Tips to Help Dogs Scared of Coming Out of a Crate. Following are several tips and guidelines to help ease your dog’s fears and hopefully help instill a bit more confidence.