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Latest Ordovician Stories

Story Of Ancient Invasive Species North America
2013-08-22 11:59:50

Brett Smith for redOrbit.com - Your Universe Online A new study from researchers at Ohio State University tells the story of an invasion and domination that took place around 450 million years ago in North America. During the Ordovician period, a dramatic ecological shift occurred near what are now the Appalachian Mountains, as represented in the fossil record. In the study, which was published recently in the journal PLOS ONE, Ohio State paleontologists provide evidence of significant...

49837_web
2012-11-16 11:46:39

April Flowers for redOrbit.com - Your Universe Online According to an international team of scientists, led by the University of Durham, UK, the recent storms that have battered the east coast of America may have been much more frequent in the region 450 million years ago. The findings of their study, published in the journal Geology, pinpoint the positions of the Equator and the landmasses of the USA, Canada and Greenland, during the Ordovician Period 450 million years ago,...

2012-05-08 13:44:37

A basic tenet underpinning scientists' understanding of extinction is that more abundant species persist longer than their less abundant counterparts, but a new University of Georgia study reveals a much more complex relationship. A team of scientists analyzed more than 46,000 fossils from 52 sites and found that greater numbers did indeed help clam-like brachiopods survive the Ordovician extinction, which killed off approximately half of the Earth's life forms some 444 million years ago....

2012-04-11 09:25:40

Caltech researchers say habitat loss and tropical cooling were to blame for mass extinction The second-largest mass extinction in Earth's history coincided with a short but intense ice age during which enormous glaciers grew and sea levels dropped. Although it has long been agreed that the so-called Late Ordovician mass extinction–which occurred about 450 million years ago–was related to climate change, exactly how the climate change produced the extinction has not been known....

Explosive Evolution Need Not Follow Mass Extinctions
2012-02-14 04:26:34

Following one of Earth's five greatest mass extinctions, tiny marine organisms called graptoloids did not begin to rapidly develop new physical traits until about 2 million years after competing species became extinct. This discovery, based on new research, challenges the widely held assumption that a period of explosive evolution quickly follows for survivors of mass extinctions. In the absence of competition, the common theory goes, surviving species hurry to adapt, evolving new...

Rise Of Land Plants Caused Planet's Temperature To Plummet
2012-02-01 12:50:33

Based on the results of a set of novel new experiments, scientists have theorized that the rise of terrestrial plants in Earth´s natural history may have initiated a series of ice ages that researchers have previously been at a loss to explain. According to the theory, as plants began to take root across the planet´s land masses, they extracted minerals from rocks and absorbed free atmospheric carbon, ultimately precipitating a significant drop in global temperatures....

2011-07-28 19:30:00

CAMARILLO, CA, July 28, 2011 /PRNewswire/ - BNK Petroleum Inc. (the "Company") (TSX: BKX), provides the following operational update: Poland The Company received a portion of the core analysis back from the 3(rd) party contractors from both the Wytowno S-1 and Lebork S-1 wells, on the adjacent Slawno and Slupsk concessions.  The following data, from the Lebork S-1 well is only from the sidewalls taken in the lower portion of the Ordovician and the Alum shale, as the whole...


Latest Ordovician Reference Libraries

Atrypa
2014-01-12 00:00:00

Atrypa (lampshell) is an extinct genus of brachiopod from the Late Ordovician stage (444 million years ago) to the Carboniferous stage (318 mya). It occurs abundantly as fossils in marine rocks. Fossils have been found on all continents except Antarctica. This animal has distinctive concentric growth lines and is unusual in that in some Devonian beds there are numerous remains of the pedicle (foot) valve, but very few of the brachial (upper) valve -- scientists speculate that strong ocean...

800px-Rugose3d
2012-04-03 18:06:52

Horn corals, known as Rugosa or Tetracoralla, are an extinct order of coral that were abundant during the Middle Ordovician to Late Permian stages. They were known as horn corals because of a unique horn-shaped chamber with a wrinkled (rugose) wall. These mostly solitary corals often reached lengths of nearly 40 inches. However, some species could form large colonies. Rugose corals have a skeleton made up of calcite that is often fossilized. Like modern corals, rugose corals were...

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Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'karpos', fruit.
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