Supplementary data tml http://rspb.royalsocietypublishing.org/content/suppl/2010/02/24/rspb.2009.2281.DC1.h "Data Supplement" References http://rspb.royalsocietypublishing.org/content/277/1690/2027.full.html#ref-list-1 This article cites 27 articles, 4 of which can be accessed free Subject collections (2356 articles) evolution • (148 articles) palaeontology • Articles on similar topics can be...

S. M. Lechmann1, D. A. May2, B. J. P. Kaus2,3 and S. M. Schmalholz4 1Geological Institute, ETH Zurich, 8092 Zurich, Switzerland. E-mail: [email protected] 2Institute of Geophysics, ETH Zurich, 8092 Zurich, Switzerland 3Department of Earth Sciences, University of Southern California, Los Angeles, USA 4Institute of Geology and Palaeontology, University of Lausanne, 1015 Lausanne, Switze...

The Triassic was a time of turmoil, as life recovered from near-annihilation. Archosauromorph reptiles flourished and diversified as they filled empty ecological niches, and some of them presaged later dinosaurian inventions, such as thickened skull roofs.

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Understanding the identity of segments and the evolution of their appendages is a prime concern of arthropod evolution studies. This has been challenging for long extinct stem-groups. Now, Cambrian fossils offer insights that will help further evolutionary considerations.

1 Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands. E-mail: [email protected] 2 Department of Geological Sciences, California State University, Long Beach CA, USA. E-mail: [email protected] 3 Cambridge Quaternary, University of Cambridge, Cambridge, England, UK. E-mail: [email protected] 4 State Key Laboratory of Palaeobiology & Stratigraphy, Nanjing Institute of Geology & Pa...

S. ANANTHARAMAN, G. P. WILSON, D. C. DAS SARMA, W. A. CLEMENS, Palaeontology Division, Geological Survey of India, Hyderabad, 500-068 India, [email protected]; Corresponding author, Department of Earth Sciences, Denver Museum of Nature & Science, 2001 Colorado Boulevard., Denver, Colorado 80205-5798 U.S.A., [email protected]; Museum of Paleontology and Department of Integrative Biology, ...