File:Emergence of traits along the mammalian lineage.jpg
Emergence of traits along the mammalian lineage
Amniotes split into the sauropsids (leading to birds and reptiles) and synapsids (leading to mammal-like reptiles).
These small early mammals developed hair, homeothermy and lactation (red lines).
Monotremes diverged from the therian mammal lineage 166 Myr ago2 and developed a unique suite of characters (dark-red text). Therian mammals with common characters split into marsupials and eutherians around 148 Myr ago2 (dark-red text).
Geological eras and periods with relative times (Myr ago) are indicated on the left. Mammal lineages are in red; diapsid reptiles, shown as archosaurs (birds, crocodilians and dinosaurs), are in blue; and lepidosaurs (snakes, lizards and relatives) are in green.
Original file name: Figure 1 Nature06936-f1.2.jpg http://www.nature.com/nature/journal/v453/n7192/fig_tab/nature06936_F1.html
Wesley C Warren, LaDeana W Hillier, Jennifer A Marshall Graves, Ewan Birney, Chris P Ponting, Frank Grützner, Katherine Belov, Webb Miller, Laura Clarke, Asif T Chinwalla, Shiaw-Pyng Yang, Andreas Heger, Devin P Locke, Pat Miethke, Paul D Waters, Frédéric Veyrunes, Lucinda Fulton, Bob Fulton, Tina Graves, John Wallis, Xose S Puente, Carlos López-Otín, Gonzalo R Ordóñez, Evan E Eichler, Lin Chen, Ze Cheng, Janine E Deakin, Amber Alsop, Katherine Thompson, Patrick Kirby, Anthony T Papenfuss, Matthew J Wakefield, Tsviya Olender, Doron Lancet, Gavin A Huttley, Arian F A Smit, Andrew Pask, Peter Temple-Smith, Mark A Batzer, Jerilyn A Walker, Miriam K Konkel, Robert S Harris, Camilla M Whittington, Emily S W Wong, Neil J Gemmell, Emmanuel Buschiazzo, Iris M Vargas Jentzsch, Angelika Merkel, Juergen Schmitz, Anja Zemann, Gennady Churakov, Jan Ole Kriegs, Juergen Brosius, Elizabeth P Murchison, Ravi Sachidanandam, Carly Smith, Gregory J Hannon, Enkhjargal Tsend-Ayush, Daniel McMillan, Rosalind Attenborough, Willem Rens, Malcolm Ferguson-Smith, Christophe M Lefèvre, Julie A Sharp, Kevin R Nicholas, David A Ray, Michael Kube, Richard Reinhardt, Thomas H Pringle, James Taylor, Russell C Jones, Brett Nixon, Jean-Louis Dacheux, Hitoshi Niwa, Yoko Sekita, Xiaoqiu Huang, Alexander Stark, Pouya Kheradpour, Manolis Kellis, Paul Flicek, Yuan Chen, Caleb Webber, Ross Hardison, Joanne Nelson, Kym Hallsworth-Pepin, Kim Delehaunty, Chris Markovic, Pat Minx, Yucheng Feng, Colin Kremitzki, Makedonka Mitreva, Jarret Glasscock, Todd Wylie, Patricia Wohldmann, Prathapan Thiru, Michael N Nhan, Craig S Pohl, Scott M Smith, Shunfeng Hou, Mikhail Nefedov, Pieter J de Jong, Marilyn B Renfree, Elaine R Mardis, Richard K Wilson Genome analysis of the platypus reveals unique signatures of evolution. Nature: 2008, 453(7192);175-83 PMID:18464734 | PMC2803040 | Nature
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