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The Paleogene World.
Description
Already, Cenozoic was separated into Tertiary (Paleocene-Pliocene) and Quaternary (Pleistocene-Holocene) ... Indeed toed (dairy cattle, sheep, pronghorn, buffalo, pigs, camels, and so on ...
Transcripts
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
Slide 2Paleogene 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
Slide 3Whale development (Eocene-Holocene) Large, marine structures Terrestrial progenitor Earth History, Ch. 18
Slide 4Giant Eocene shark Modern shark jaws Earth History, Ch. 18
Slide 5Paleogene 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
Slide 6Paleogene 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
Slide 7Paleogene 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
Slide 8Eocene fossil bat Earth History, Ch. 18
Slide 9Earth History, Ch. 18
Slide 10Paleogene 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
Slide 11Hyracotherium (" Eohippus ") most punctual steed (odd-toed) Dog-sized 4 toes 3 toes Earth History, Ch. 18
Slide 12Diacodexis (early even-toed ungulate) Earth History, Ch. 18
Slide 13Eocene elephants Earth History, Ch. 18
Slide 14Diatryma (avoid this turkey!) 8 ft Earth History, Ch. 18
Slide 15Paleogene 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
Slide 16Earth History, Ch. 18
Slide 17Paraceratherium 18 ft at shoulder Earth History, Ch. 18
Slide 18Aegyptopithecus (Oligocene monkey) Earth History, Ch. 18
Slide 19stallions generally missing in Old World Earth History, Ch. 18
Slide 20Dinictis (Oligocene saber-tooth feline) Earth History, Ch. 18
Slide 21Oligocene mammalian fauna of Nebraska & South Dakota Earth History, Ch. 18
