Archaeoceti

Decent Essays
Improved Essays
Superior Essays
Great Essays
Brilliant Essays
    Page 1 of 1 - About 2 Essays
  • Superior Essays

    Some people may not believe this, but whales have been around for over 50 million years; however, they have not always like they do today (WGBH). Scientist have found over seven different species that whales could have originated from. Some species have had four legs with a furry tail; others have had two flippers and a blubbery tail (“The Evolution”) Here are some hypotheses for how whales have became whales: evolution (depending on religion and beliefs) or whales have just always been apart of the world and never really thought about it. Evolution is known as a response to opportunities and challenges in the environment (Surera). There are eight different species of whales: Indohyus, Pakicetus, Ambulocetus, Kutchicetus, Rodhocetus, Dorudon, Odontocetes, and Mysticetes (“The Evolution”). Scientist hypothesised whales have become from terrestrial animals (Surera). There is some debate about which terrestrial mammals are closest relatives of whales. It was originally thought that whales evolved from doglike ungulates called Mesonychids, that lived around 50 million years ago, because their jaw bones resembled those of whales. This theory has been discarded (Hays). Scientist hypothesised that whales have came from even-toed animals: for example, cattle, camels, pigs, and deer. All these animals and whales all have multi-chambered stomachs (Hays). The first species related to whales, Indohyus, researchers estimated them living 48 million years ago. Scientist thought their…

    • 918 Words
    • 4 Pages
    Superior Essays
  • Great Essays

    Modern Whales Divergence

    • 3560 Words
    • 15 Pages

    A tale of modern whales: Divergence and radiation of Neoceti during the Oligocene period likely driven by environmental changes in Southern Oceans ZOO*4910 Integrative Vertebrate Biology Group 04 Candace Flynn (cflynn@mail.uoguelph.ca), Melissa Westaway, Katherine Znotinas, and Daniela Banda Marin 2 November 2014 Abstract Reasons for divergence within the animal kingdom is heavily debated across many orders. Macroevolution in Cetacea has been attributed to a variety of…

    • 3560 Words
    • 15 Pages
    Great Essays
  • Previous
    Page 1
    Next