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      Fossiliferous amber deposits from the Cretaceous (Albian) of Spain

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          Taphonomy of insects in carbonates and amber

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            A NEW FOSSIL RESIN WITH BIOLOGICAL INCLUSIONS IN LOWER CRETACEOUS DEPOSITS FROM ÁLAVA (NORTHERN SPAIN, BASQUE-CANTABRIAN BASIN)

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              Early Cretaceous spider web with its prey.

              The orb web is a spectacular evolutionary innovation that enables spiders to catch flying prey. This elegant, geometric structure is woven with silk fibers that are renowned for their superior mechanical properties. We used silk gland expression libraries to address a long-standing controversy concerning the evolution of the orb-web architecture. Contrary to the view that the orb-web design evolved multiple times, we found that the distribution and phylogeny of silk proteins support a single, ancient origin of the orb web at least 136 million years ago. Furthermore, we substantially expanded the repository of silk sequences that can be used for the synthesis of high-performance biomaterials.
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                Author and article information

                Journal
                Comptes Rendus Palevol
                Comptes Rendus Palevol
                Elsevier BV
                16310683
                January 2007
                January 2007
                : 6
                : 1-2
                : 135-149
                Article
                10.1016/j.crpv.2006.09.003
                © 2007

                http://www.elsevier.com/tdm/userlicense/1.0/

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