Earth and the Environment

How many species became extinct at the end of the Cretaceous period?

Link to this answer

CloseClose

Link to this answer

Share this credible answer with others. Simply paste this code into your blog or Web page:

<a href="http://qanda.encyclopedia.com/question/many-species-became-extinct-end-cretaceous-period-84314.html" >How many species became extinct at the end of the Cretaceous period?</a>
E-mail this answer Link to this answer

By the end of the Cretaceous, about 75% of all species, including marine, freshwater, and terrestrial organisms, became extinct. The rather abrupt disappearance of Cretaceous life remains a mystery; similar mass extinctions have occurred at other periods in the earth's history.

Answer verified with
Get more facts and information about Cretaceous period . Or, view the full encyclopedia entry from The Columbia Encyclopedia, Sixth Edition.

Similar questions: What percentage of species became extinct at the end of the Cretaceous period? What species became extinct at the end of the Cretaceous period? [ Hide these questions ]

Related research questions

Related research articles

Cycads: from the upper Jurassic and lower cretaceous rocks of Southeastern Utah.
Magazine article from: Rocks & Minerals ...the Early Cretaceous Cedar Mountain...three new species have been...Cycadeoidales, which became extinct at the end of the Cretaceous. If this...Poland, a more recent collector...identified as an extinct Cycadeoidea...during this period (Ward 1894...Preservation ...
PURDUE PROFESSOR HAS NEW FINDINGS ON WHEN DINOSAURS BECAME EXTINCT
Newspaper article from: Post-Tribune (IN) ...extinct at the end of the Cretaceous Period. The theory...past the Cretaceous Period...continental drift, species development...the late Cretaceous Period...Zinsmeister's most recent findings...dinosaurs became extinct. "The more ...
Argon but not forgotten. (potassium-argon dating adds to theory of Cretaceous...
Magazine article from: The Economist (US) ...marked the end of the Cretaceous period - the precise...dinosaurs became extinct. But the...used the most precise of...millions of species suddenly...right time. Many of those...ended the Cretaceous period are...off some species while leaving...
Cretaceous creatures make a comeback.
Magazine article from: Science News ...that lived more than 100...ago -- a period that has...A lot more are still...previously unknown species, says Murry...explains. Most of the uncovered...during the Cretaceous period...the early Cretaceous period of...Dinosaurs became extinct at the ...
Kids' questions answered.(Originated from Knight-Ridder Newspapers)
Newspaper article from: Knight Ridder/Tribune News Service ...endangered species are there...since the Cretaceous Period. That was...rainforests become extinct each day...are many, many more that haven...have become extinct, if habitats...destroyed. Most of the animals...Q. How many bones are...the dogs more ...
See all results at HighBeam

HighBeam gives you access to newspaper, magazine, and trade journal articles plus press releases, facts, information, and biographies from thousands of sources.