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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 ...
Whales, the ocean’s largest marine mammals, renowned for their immense size and exceptional adaptability can be found roaming waters all over the world. From the depths of the Arctic to warm ...
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 ...
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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Georgiacetus is an extinct genus of ancient whale known from the Eocene period of the United States.Fossils are known from Georgia, Alabama, and Mississippi and protocetid fossils from the right time frame, but not yet confirmed as Georgiacetus, have been found in Texas (Kellogg 1936) and South Carolina (Albright 1996).
The evolution of tetrapods began about 400 million years ago in the Devonian Period with the earliest tetrapods evolved from lobe-finned fishes. [1] Tetrapods (under the apomorphy-based definition used on this page) are categorized as animals in the biological superclass Tetrapoda, which includes all living and extinct amphibians, reptiles, birds, and mammals.