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Late+Paleozoic+Era[1]

Late+Paleozoic+Era[1] - The Late Paleozoic World 251...

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Unformatted text preview: The Late Paleozoic World 251 Million years 299 Million years 318 Million years 359 Million years Late Paleozoic • Carboniferous glaciation – Abundant swamps • Permian drying Late Paleozoic Life in the Sea • Marine – Ammonoids abundant • Highly mobile – Brachiopods • Productids • Cone-shaped shells • Produced reefs Late Paleozoic Life in the Sea • Crinoid meadows – Significant contribution to early Carboniferous (Mississippean) limestone Late Paleozoic Life in the Sea • Bryozoans – Sheetlike colonial animals – Trapped sediment in mounds – Important contribution to limestone Late Paleozoic Life in the Sea • Fusulinids – Amoeba-like with shells – Late Carboniferous radiation – Up to 10 cm in length – Guide fossil for Upper Carboniferous and Permian Late Paleozoic Life in the Sea • Higher Mg-Ca ratio • Aragonitic algae – Important in late Carboniferous reefs • Aragonitic sponges – Play important role in Permian reefs Late Paleozoic Life on Land • Extensive swamps developed • Coal swamps dominated by lycopods – Lepidodendron • Up to 30 m tall – Sigillaria Late Paleozoic Life on Land • Seed ferns – Abundant – Small bushy plants – Large and treelike • Glossopteris Late Paleozoic Life on Land • Gymnosperms – Naked seed plants – Formed woodlands – Conifers • Cone bearing plants Late Paleozoic Life on Land • Permian – Gymnosperms came to dominate terrestrial environments Late Paleozoic Life on Land • Winged insects – Dragonflies – Mayflies Late Paleozoic Life on Land • Amphibians • Reptiles Late Paleozoic Life on Land...
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Late+Paleozoic+Era[1] - The Late Paleozoic World 251...

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