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Peregocetus is a genus of early whale that lived in what is now Peru during the Middle Eocene epoch. [1] [2] Its fossil was uncovered in 2011 in the Yumaque Member (Paracas Formation) of the Pisco Basin at Playa Media Luna by a team consisting of members from Belgium, Peru, France, Italy, and the Netherlands.
Scientists have unearthed fossils in a coastal desert of southern Peru of a four-legged whale that thrived both in the sea and on land about 43 million years ago in a discovery that illuminates a ...
Archaeoceti ("ancient whales"), or Zeuglodontes in older literature, is a paraphyletic group of primitive cetaceans that lived from the Early Eocene to the late Oligocene 1] Representing the earliest cetacean radiation , they include the initial amphibious stages in cetacean evolution , thus are the ancestors of both modern cetacean suborders ...
Our free, downloadable whale unit includes five days of comprehensive lesson From the depths of the Arctic to warm, tropical waters, whales are uniquely recognized for migrating thousands of miles ...
The earliest known ancestor of arctic whales is Denebola brachycephala from the late Miocene around 9–10 million years ago. [55] A single fossil from Baja California indicates the family once inhabited warmer waters. [27] [56] [57] Acrophyseter skull. Ancient sperm whales differ from modern sperm whales in tooth count and the shape of the ...
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The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals, the even-toed ungulates. The earliest cetaceans were still hoofed mammals. The earliest cetaceans were still hoofed mammals.
In 2005, an international team of scientists suggested that whales and hippopotami share a common water and terrestrial dwelling ancestor, which lived 50 to 60 million years ago. Two groups emerged from this common ancestor: early cetaceans, which in time returned to the sea permanently, and a large group of superficially pig-like land-based ...