https://www.earthmagazine.org/tags/archaeopteryx/ Recent content in Archaeopteryx on EARTH Magazine Hugo en-US American Geosciences Institute. All rights reserved. Thu, 05 Jan 2012 06:41:58 -0500 https://www.earthmagazine.org/article/benchmarks-september-30-1861-archaeopteryx-discovered-and-described/ Thu, 05 Jan 2012 06:41:58 -0500 https://www.earthmagazine.org/article/benchmarks-september-30-1861-archaeopteryx-discovered-and-described/ <figure class="earth-figure"> <img src="https://www.americangeosciences.org/static/earth/benchmarks-september-30-1861-archaeopteryx-discovered-and-described/i-4bb-7db-9-2.jpg" alt="_Archaeopteryx _was first discovered and described in 1861. WitmerLab at Ohio University" loading="eager" decoding="async"> <figcaption>_Archaeopteryx _was first discovered and described in 1861. WitmerLab at Ohio University</figcaption> </figure> <figure class="earth-figure"> <img src="https://www.americangeosciences.org/static/earth/benchmarks-september-30-1861-archaeopteryx-discovered-and-described/i-4b9-7db-9-2.jpg" alt="_Archaeopteryx _was originally identified based on the fossil of a single feather. WitmerLab at Ohio University" loading="lazy" decoding="async"> <figcaption>_Archaeopteryx _was originally identified based on the fossil of a single feather. WitmerLab at Ohio University</figcaption> </figure> <figure class="earth-figure"> <img src="https://www.americangeosciences.org/static/earth/benchmarks-september-30-1861-archaeopteryx-discovered-and-described/i-4ba-7db-9-2.jpg" alt="_Archaeopteryx lithographica_, Solnhofen specimen, as displayed at the Munich Mineral Show in Germany in 2009. H. Raab, Creative Commons Attribution-ShareAlike 3.0 Unported" loading="lazy" decoding="async"> <figcaption>_Archaeopteryx lithographica_, Solnhofen specimen, as displayed at the Munich Mineral Show in Germany in 2009. H. Raab, Creative Commons Attribution-ShareAlike 3.0 Unported</figcaption> </figure> <p>The Solnhofen limestone of southern Germany has a storied history. First quarried nearly 2,000 years ago by the Romans, the dense, fine-grained stone gained fame in the early 1800s for its use in lithography. In 1798, Alois Senefelder discovered that a combination of acid etching and drawing with a wax crayon allowed him to create a surface that produced highly precise images. So valued is the Solnhofen lithographic limestone that people still use it today despite the development of cheaper and simpler techniques.</p> https://www.earthmagazine.org/article/dinosaurs-active-lifestyles-suggest-they-were-warm-blooded/ Thu, 05 Jan 2012 06:41:58 -0500 https://www.earthmagazine.org/article/dinosaurs-active-lifestyles-suggest-they-were-warm-blooded/ <p>Whether dinosaurs were warm-blooded or cold-blooded has been a long-standing question in paleobiology. Now, new research on how two-legged dinosaurs walked and ran adds new evidence to the argument for warm-bloodedness, and suggests that even the earliest dinosaurs may have been warm-blooded.</p> https://www.earthmagazine.org/article/dinosaurs-true-colors-revealed/ Thu, 05 Jan 2012 06:41:58 -0500 https://www.earthmagazine.org/article/dinosaurs-true-colors-revealed/ <figure class="earth-figure"> <img src="https://www.americangeosciences.org/static/earth/dinosaurs-true-colors-revealed/i-3a6-7da-4-1e.jpg" alt="_Sinosauropteryx _was a turkey-sized theropod with an orange back and tail with white stripes on the tail. Chuang Zhao and Lida Xing" loading="eager" decoding="async"> <figcaption>_Sinosauropteryx _was a turkey-sized theropod with an orange back and tail with white stripes on the tail. Chuang Zhao and Lida Xing</figcaption> </figure> <p>Modern birds range across the color spectrum from brilliant blue to Big Bird yellow to vibrant vermillion, so it stands to reason that feathered dinosaurs shared these colorful traits. And in fact, few paleontologists have doubted that dinosaurs were multihued beasts. But until a couple of recent finds in China, they had no real evidence. Two new studies detail the findings, which researchers say also resolve the debate over whether birds descended from dinosaurs.</p>