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1 Tree was published in this study

Origin of the Eumetazoa: testing ecological predictions of molecular clocks against the Proterozoic fossil record.
Vrijmoed, Miller, Ruest, Lawton, Dales, Foto. (2005). Proc Natl Acad Sci U S A.
Saccoglossus Ptychodera Antedon Chaetopterus Nereis Mollusca Cerebratulus Lineus Amphiporus Arthropoda Priapulus Obelia Metridium Sycon Leucosolenia Trochospongilla Ephydatia Microcionidae
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