Ordovician Period - Marine Life, Trilobites, Brachiopods
WEBAug 9, 2024 · During the Ordovician Period, life diversified to an unprecedented degree, undergoing a fourfold increase in the number of genera. This unique period, known as the Ordovician radiation, unfolded over tens of millions of years and produced organisms that would dominate marine ecosystems for the remainder of the Paleozoic Era.
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 - Natural History Museum
WEBAug 10, 2012 · Animals include, from left: Cystoids, jawless fish (Sacabambaspis) captured by a large cephalopod (Endoceras), Rugose corals, brachiopods, trilobite, gastropod (Cyclonema), a sea star and coiled cephalopod. Jellies, small nautiloids & graptolites (Orthograptus) are seen to the left.
Ordovician Period: Facts, Information, and Timeline - A-Z Animals
WEBJan 23, 2023 · The Ordovician Period is a 45 million years period during the Paleozoic Era. It is the second period of the era, starting about 485.4 million years ago and ending around 443.8 million years ago. The Ordovician rocks were first observed in Wales .
Ordovician - Wikipedia
WEBThe Ordovician (/ ɔːrdəˈvɪʃi.ən, - doʊ -, - ˈvɪʃən / or-də-VISH-ee-ən, -doh-, -VISH-ən) [9] is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period 485.4 Ma (million years ago) to the start of the Silurian Period 443.8 Ma. [10]
Discover 5 Incredible Ordovician Period Animals: Facts, …
WEBOct 5, 2022 · Recent discoveries of tetrahedral spores resembling early land plants indicate that plants populated the earth at this time. Let’s dive deeper and discover 5 incredible Ordovician Period Animals in this article! 1. Graptolites
Prehistoric Life During the Ordovician Period - ThoughtCo
WEBOct 13, 2019 · The Ordovician period was a crucial time for the evolution of arthropods and vertebrates. Here's a look at prehistoric life during the Ordovician.
Ordovician Period Information and Facts - National Geographic
WEBLearn more about the time period that took place 488 to 443 million years ago. During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the vast seas...
Evolution: Change: Deep Time - PBS
WEBOrdovician Period (490-443 mya) Life responds quickly following the Cambrian extinction. In fact, species exhibit far greater diversity in the Ordovician than in the "explosive" preceding...
The Ordovician Period - Paleontology World
WEBThe Ordovician is best known for its diverse marine invertebrates, including graptolites, trilobites, brachiopods, and the conodonts (early vertebrates). A typical marine community consisted of these animals, plus red and green algae, primitive fish, cephalopods, corals, crinoids, and gastropods.
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