Broad phylogenomic sampling improves resolution of the animal tree of life

Casey W. Dunn (), Andreas Hejnol, David Q. Matus, Kevin Pang, William E. Browne, Stephen A. Smith, Elaine Seaver, Greg W. Rouse, Matthias Obst, Gregory D. Edgecombe, Martin V. Sørensen, Steven H. D. Haddock, Andreas Schmidt-Rhaesa, Akiko Okusu, Reinhardt Møbjerg Kristensen, Ward C. Wheeler, Mark Q. Martindale and Gonzalo Giribet
Additional contact information
Casey W. Dunn: Kewalo Marine Laboratory, PBRC, University of Hawaii, 41 Ahui Street, Honolulu, Hawaii 96813, USA
Andreas Hejnol: Kewalo Marine Laboratory, PBRC, University of Hawaii, 41 Ahui Street, Honolulu, Hawaii 96813, USA
David Q. Matus: Kewalo Marine Laboratory, PBRC, University of Hawaii, 41 Ahui Street, Honolulu, Hawaii 96813, USA
Kevin Pang: Kewalo Marine Laboratory, PBRC, University of Hawaii, 41 Ahui Street, Honolulu, Hawaii 96813, USA
William E. Browne: Kewalo Marine Laboratory, PBRC, University of Hawaii, 41 Ahui Street, Honolulu, Hawaii 96813, USA
Stephen A. Smith: Yale University, PO Box 208105, New Haven, Connecticut 06520, USA
Elaine Seaver: Kewalo Marine Laboratory, PBRC, University of Hawaii, 41 Ahui Street, Honolulu, Hawaii 96813, USA
Greg W. Rouse: Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive 0202, La Jolla, California 92093, USA
Matthias Obst: Kristineberg Marine Research Station, Kristineberg 566, 450 34 Fiskebäckskil, Sweden
Gregory D. Edgecombe: The Natural History Museum, Cromwell Road, London SW7 5BD, UK
Martin V. Sørensen: Ancient DNA and Evolution Group, Biological Institute, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark
Steven H. D. Haddock: Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, California 95039, USA
Andreas Schmidt-Rhaesa: Zoological Museum, University of Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
Akiko Okusu: Simmons College, The Fenway, Boston, Massachusetts 02115, USA
Reinhardt Møbjerg Kristensen: Zoological Museum, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark
Ward C. Wheeler: American Museum of Natural History, Central Park West at 79th Street, New York, New York 10024, USA
Mark Q. Martindale: Kewalo Marine Laboratory, PBRC, University of Hawaii, 41 Ahui Street, Honolulu, Hawaii 96813, USA
Gonzalo Giribet: Department of Organismic and Evolutionary Biology,

Nature, 2008, vol. 452, issue 7188, 745-749

Abstract: Improved relations The accumulation of molecular data is reshaping our understanding of the evolutionary relationships between the major groups of animals. Early work in the field relied upon data from a small number of genes, but the availability of fully sequenced genomes and expressed sequence tags (ESTs, short sub-sequences obtained from large numbers of complementary DNA clones), means that huge swathes of the animal kingdom can now be subjected to such analysis. A new study describes and discusses almost 40 megabases-worth of ESTs from animals of 21 phyla, including 11 animals for which no genomic or EST data were previously available. The conclusions confirm ideas long established by anatomy, including the monophyletic nature of the molluscs, deriving from a common ancestor despite their remarkable variety. New and interesting evolutionary relationships are also uncovered, including a single origin for spiral cleavage of the early embryo. The cover illustrates animal diversity, including acorn, ribbon, arrow and velvet worms, jellyfish and sea spider.

Date: 2008
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DOI: 10.1038/nature06614

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