Ordovician Period - Marine Life, Trilobites, Brachiopods
WEBAug 9, 2024 · Newer fauna intermingled with older Cambrian fauna, which was primarily made up of various trilobites and inarticulate (unjointed) brachiopods living in a wide range of environments between the shore and the continental slope.
Category:Ordovician animals - Wikipedia
WEBAnimals of the Ordovician period. Wikimedia Commons has media related to Ordovician Animalia. Paleontology portal. Subcategories. This category has the following 7 …
Ordovician - Wikipedia
WEBOn the whole, the fauna that emerged in the Ordovician were the template for the remainder of the Palaeozoic. The fauna was dominated by tiered communities of suspension feeders, mainly with short food chains.
Ordovician Period - Natural History Museum
WEBAug 10, 2012 · The new Paleozoic fauna created by the “Ordovician radiation” dominated the seas for the next 230 million years. Pandemic species of planktonic graptolites and conodontes appear in the fossil record during this Period.
Ordovician Period | Major Events, Extinction, & Facts
WEBAug 9, 2024 · Ordovician Period, in geologic time, the second period of the Paleozoic Era. It began 485.4 million years ago and ended 443.8 million years ago. The interval was a time of intense diversification (an increase in the number of species) of marine animal life in what became known as the Ordovician radiation.
Ordovician Period Information and Facts - National Geographic
WEBLife at the start of the Ordovician remained confined to the seas with new animals evolving in place of those that didn't survive the Cambrian. Chief among them were the squidlike nautiloids, a...
Great Ordovician Biodiversification Event - Wikipedia
WEBThe 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.
Prehistoric Life During the Ordovician Period - ThoughtCo
WEBOct 13, 2019 · Over the course of 25 or so million years, the number of marine genera around the world quadrupled, including new varieties of sponges, trilobites, arthropods, brachiopods, and echinoderms (early starfish).
Ordovician radiation | Marine Life, Climate Change & Extinction
WEBOrdovician radiation, an interval of intense diversification of marine animal life that unfolded over tens of millions of years during the Ordovician Period (485.4 million to 443.4 million years ago) of geologic time. The interval was characterized by the emergence of organisms that would come to.
Ordovician Period—485.4 to 443.8 MYA - U.S. National Park Service
WEBApr 28, 2023 · Though less famous than the Cambrian explosion, marine fauna increased fourfold during the Ordovician, resulting in 12% of all known Phanerozoic marine fauna (Dixon et al. 2001). The sea teemed with life different from its Cambrian predecessors such as bivalves, gastropods (snails), bryozoans (moss animals), and crinoids (sea lilies).
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