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The Eocene lasted from 56 to 33.9 million years ago and saw the dawn of modern fauna. It is marked by a low carbon isotope ratio at the start and a major extinction event at the end.
w sensie geochronologicznym: środkowa epoka paleogenu, trwająca około 22 milionów lat (od 56,0 do 33,9 mln lat temu). Eocen jest młodszy od paleocenu a starszy od oligocenu. Eocen dzieli się na cztery wieki: iprez, lutet, barton i priabon.
20 wrz 2024 · Learn about the Eocene Epoch, the second of three divisions of the Paleogene Period, when many modern groups of organisms appeared and diversified. Find out how the Eocene climate, rocks, and fossils are distributed and dated worldwide.
2 lip 2018 · Here we present a continuous Eocene equatorial sea surface temperature record, based on biomarker palaeothermometry applied on Atlantic Ocean sediments. We combine this record with the sparse...
The Eocene epoch was when the first prehistoric whales left dry land and opted for a life in the sea, a trend that culminated in the middle Eocene Basilosaurus, which attained lengths of up to 60 feet and weighed in the neighborhood of 50 to 75 tons.
18 lip 2018 · The Eocene Epoch marks the first appearance in the fossil record of the two completely marine mammal groups, the cetaceans (whales, porpoises, and dolphins) and the sirenians (akin to the modern manatees and dugongs). Similarly, the Eocene provides the first elephant-like animals and the early bats.
The Eocene epoch is part of the Tertiary Period in the Cenozoic Era, and lasted from about 54.8 to 33.7 million years ago (mya). The oldest known fossils of most of the modern orders of mammals appear in a brief period during the Early Eocene and all were small, under 10 kg.
