The Paleogene World.


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Already, Cenozoic was separated into Tertiary (Paleocene-Pliocene) and Quaternary (Pleistocene-Holocene) ... Indeed toed (dairy cattle, sheep, pronghorn, buffalo, pigs, camels, and so on ...
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Slide 1

The Paleogene World Holocene Two-fold subdivision of Cenozoic: Paleogene , Neogene Previously , Cenozoic was isolated into Tertiary (Paleocene-Pliocene) and Quaternary (Pleistocene-Holocene) Pleistocene Neogene Pliocene Miocene 24 Cenozoic Oligocene Paleogene Eocene Paleocene 65 Earth History, Ch. 18

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Paleogene life In marine domain, most gatherings that survived end-Cretaceous mass elimination recouped and enhanced amid Paleogene Planktonic forams, calcareous nannos, mollusks, arthropods Demise of goliath marine reptiles opened the way to whales (Eocene) and monster sharks ! Earth History, Ch. 18

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Whale development (Eocene-Holocene) Large, marine structures Terrestrial progenitor Earth History, Ch. 18

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Giant Eocene shark Modern shark jaws Earth History, Ch. 18

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Paleogene life Other intriguing newcomers to marine or negligible marine living spaces: Penguins (Eocene) Pinnipeds (seals, ocean lions, walruses) Thought to have advanced from earthbound progenitors in Paleogene time, yet most seasoned fossils are Neogene Earth History, Ch. 18

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Paleogene life ashore… … .. Expansion and "modernization" of angiosperms By early Oligocene time, half of all angiosperm genera were ones that still exist today Origin of grasses Earliest structures were sedge-like ( irregular development ) Late Oligocene-Neogene frames fit for constant development (ready to withstand munching weight) Earth History, Ch. 18

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Paleogene life Explosive versatile radiation of well evolved creatures ! By Eocene time, most cutting edge requests of well evolved creatures had showed up, including primates, carnivores and steeds Cantius , moving around in our family tree! Earth History, Ch. 18

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Eocene fossil bat Earth History, Ch. 18

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Earth History, Ch. 18

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Paleogene life Other Eocene peculiarities… … .. Separation of ungulates (hoofed herbivores) Even-toed (cows, sheep, gazelle, buffalo, pigs, camels, and so forth.) Odd-toed (stallions, ungulates, rhinos) Appearance of elephants Appearance of Diatryma (mammoth, flightless feathered creatures) Earth History, Ch. 18

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Hyracotherium (" Eohippus ") most punctual steed (odd-toed) Dog-sized 4 toes 3 toes Earth History, Ch. 18

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Diacodexis (early even-toed ungulate) Earth History, Ch. 18

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Eocene elephants Earth History, Ch. 18

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Diatryma (avoid this turkey!) 8 ft Earth History, Ch. 18

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Paleogene life Many gatherings of warm blooded creatures got to be terminated amid Eocene time Oligocene was critical for: Paraceratherium , biggest area vertebrate ever (individual from rhino family) Origin of genuine monkeys "Elimination" of stallions all through Eurasia Expansion of huge felines Earth History, Ch. 18

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Earth History, Ch. 18

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Paraceratherium 18 ft at shoulder Earth History, Ch. 18

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Aegyptopithecus (Oligocene monkey) Earth History, Ch. 18

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stallions generally missing in Old World Earth History, Ch. 18

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Dinictis (Oligocene saber-tooth feline) Earth History, Ch. 18

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Oligocene mammalian fauna of Nebraska & South Dakota Earth History, Ch. 18

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