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Categories: Ordovician Pages with DOIs broken since 2008 All pages needing cleanup Wikipedia articles needing factual verification since August 2007 All pages needing factual verification |
Summary Of: OrdovicianWhile recognition of the distinct Ordovician period was slow in the... The Ordovician period started at a major extinction event called the... The Ordovician Period is usually broken into Early... The corresponding rocks of the Ordovician System are referred to as coming from the Lower... Ordovician rocks are chiefly... that make up a large part of the Ordovician system consist chiefly of... The Ordovician was a time of... The Early Ordovician climate was thought to be quite warm... secreting organisms in the Ordovician compared to the Cambrian... the Ordovician was a time of shallow continental seas rich in life... appeared in the Ordovician as did the first... During the Middle Ordovician there was a large increase in the intensity and diversity of bioeroding organisms... Trilobites in the Ordovician were very different than their predecessors in the... Middle Ordovician fossiliferous shales and limestones in the lower half... Outcrop of Upper Ordovician rubbly limestone and shale... Outcrop of Upper Ordovician limestone and minor shale... Bryozoan fossils in Ordovician kukersite oil shale... An Ordovician strophomenid brachiopod with encrusting inarticulate brachiopods and a bryozoan... such fossilized fungal hyphae and spores from the Ordovician of Wisconsin have been found with an age of about 460 million years ago... The Ordovician came to a close in a series of... years ago and mark the boundary between the Ordovician and the following... which have been detected in Upper Ordovician rock strata of... a simpler explanation of the holes in Ordovician shells analyzed by Kaplan and Baumiller... An Ordovician reef in Vermont... Ordovician fossils of the famous Cincinnatian Group...Encyclodia Page On: Ordovician |
