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archaeopteryx

[ahr-kee-op-tuh-riks] /ˌɑr kiˈɒp tə rɪks/
noun
1.
a reptilelike fossil bird of the genus Archaeopteryx, from the late Jurassic Period, having teeth and a long, feathered, vertebrate tail.
Compare protoavis.
Origin
1855-1860
1855-60; < Neo-Latin < Greek archaio- archaeo- + ptéryx wing
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for archaeopteryx

archaeopteryx

/ˌɑːkɪˈɒptərɪks/
noun
1.
any of several extinct primitive birds constituting the genus Archaeopteryx, esp A. lithographica, which occurred in Jurassic times and had teeth, a long tail, well-developed wings, and a body covering of feathers
Word Origin
C19: from archaeo- + Greek pterux winged creature
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for archaeopteryx
n.

oldest known fossil bird, 1859, Modern Latin, from archaeo- "ancient, primitive" + Greek pteryx "wing" (see pterodactyl).

Online Etymology Dictionary, © 2010 Douglas Harper
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archaeopteryx in Science
archaeopteryx
  (är'kē-ŏp'tər-ĭks)   
An extinct primitive bird of the genus Archaeopteryx of the Jurassic Period, having characteristics of both birds and dinosaurs. Like dinosaurs, it had a long, bony tail, claws at the end of its fingers, and teeth. Like birds it had wings and feathers. Many scientists regard it as evidence that birds evolved from small carnivorous dinosaurs. See Note at bird.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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