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  1. May 21, 2007 · The fossil record demonstrates that mammals re-entered the marine realm on at least seven separate occasions. Five of these clades are still extant, whereas two are extinct. This review presents a brief introduction to the phylogeny of each group of marine mammals, based on the latest studies using both morphological and molecular data.

    • Mark D. Uhen
    • 144
    • 2007
    • 21 May 2007
  2. Jan 26, 2015 · Marine mammals from different mammalian orders share several phenotypic traits adapted to the aquatic environment and therefore represent a classic example of convergent evolution.

    • Andrew D Foote, Andrew D Foote, Yue Liu, Gregg W C Thomas, Tomáš Vinař, Jessica Alföldi, Jixin Deng,...
    • 2015
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  4. Dec 25, 2022 · It is a fascinating discourse on what lessons marine evolutionary biology can learn from “biological portuarization,” the repeated evolution of marine species in port‐ecosystems and how researchers could best make use of ports by treating them as giant—and strongly replicated—mesocosm experiments for supporting predictive marine ...

  5. Jul 10, 2023 · Marine mammals are a diverse group of aquatic animals that depend on ocean ecosystems for their survival. There are approximately 126 extant species of marine mammals that are divided into five distinct groups: (1) pinnipeds: seals, sea lions, and walruses; (2) cetaceans: whales, dolphins, and porpoises; (3) sirenians: manatees and dugongs; (4 ...

  6. A rigorous test for the evolution of marine mammals would use many more species and more characters. But the general result holds: mammals made the transition to water at least three times: in pinnipeds (seals and walruses), in whales, and also in sirenians (dugongs and manatees).

    • 1MB
    • 15
  7. Nov 9, 2015 · Convergent evolution of marine mammals is associated with distinct substitutions in common genes. Xuming Zhou, Inge Seim & Vadim N. Gladyshev. Scientific Reports 5, Article number:...

  8. Nov 15, 2019 · Marine Mammals. Randall W. Davis. 2419 Accesses. Abstract. Early Cetacea are classified as Archaeoceti (six families), and their fossils reveal the morphological and functional evolution of early, terrestrial Artiodactyla to fully aquatic Cetacea over 15 million years during the Eocene (~52 Mya).

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