Transcript Slide 1
THE DEVONIAN Life in the Devonian Sponges with glass skeleton Hydnoceras left Hindia above THE DEVONIAN Life in the Devonian Sponges and tabulate coral reefs THE DEVONIAN Life in the Devonian Devonian corals Rugose Corals Petoskey Stone Tabulate coral State fossil of Michigan THE DEVONIAN Life in the Devonian Spiriferid brachiopods THE DEVONIAN Life in the Devonian Goniatite cephalopods Suture pattern more complex than Nautiloid THE DEVONIAN Life in the Devonian Fish Placoderms expanded rapidly in Devonian Dunkleosteus Arthrodires - carnivorous THE DEVONIAN Life in the Devonian Fish Placoderms expanded rapidly in Devonian Antiarchs – mud-grubbers Pterichthyoides above Bothriolepis right THE DEVONIAN Life in the Devonian Fish Chondrichthyan fish – cartilagenous fish Cladoselache THE DEVONIAN Life in the Devonian Fish Osteichthyan fish – bony or ray-finned fish Cheirolepis THE DEVONIAN Life in the Devonian Fish Osteichthyan fish – lobe-finned fish Led to tetrapods Dipterus THE DEVONIAN Life in the Devonian Eurypterids Eurypterus remipes THE DEVONIAN Life in the Devonian Plants Aglaophyton left Rhynia center Horneophyton right THE DEVONIAN Life in the Devonian Plants Lycopsids Pteridophytes (seed ferns) Sphenopsids (Calamites) THE DEVONIAN Life in the Devonian Plants THE DEVONIAN Life in the Devonian Plants THE MISSISSIPPIAN The Age of Crinoids Mississippian named by Alexander Winchell in 1870 Named for carbonate rocks deposited in the Upper Mississippi River valley Lower Carboniferous in Europe and Canada THE MISSISSIPPIAN THE MISSISSIPPIAN The Age of Crinoids Acadia highlands reduced Decrease in muddy sediments Paleozoic flooding by epeiric seas THE MISSISSIPPIAN The Age of Crinoids THE MISSISSIPPIAN Mississippian Tectonics THE MISSISSIPPIAN Mississippian Tectonics THE MISSISSIPPIAN The Age of Crinoids Acadia highlands reduced Decrease in muddy sediments Paleozoic flooding by epeiric seas THE MISSISSIPPIAN The Age of Crinoids Crinoids abundant Ooids abundant Clear, shallow marine water Salinity higher than normal Mississippian Lime Bank THE MISSISSIPPIAN The Age of Crinoids Late Mississippian the Kaskaskia sea retreated THE MISSISSIPPIAN The Age of Crinoids Late Mississippian the Kaskaskia sea retreated Detrital muds and limestones formed. Petroleum reservoirs Nonmarine shales and sandstones from erosion of Acadian highlands THE MISSISSIPPIAN The Age of Crinoids Erosion of Acadian highland produced Pocono Ss. Forms resistant ridges of the Pocono Mtns. Forms third clastic wedge THE MISSISSIPPIAN The Age of Crinoids Erosion of Acadian highland produced Pocono Ss. THE MISSISSIPPIAN The Age of Crinoids Life in the Mississippian Rugose corals common THE MISSISSIPPIAN The Age of Crinoids Life in the Mississippian Archimedes common bryozoan THE MISSISSIPPIAN The Age of Crinoids Life in the Mississippian Bivalves uncommon Goniatite cephalopods Graptolites go extinct THE MISSISSIPPIAN The Age of Crinoids Life in the Mississippian Crinoids abundant THE MISSISSIPPIAN The Age of Crinoids Life in the Mississippian Insects become abundant Forests include Seed ferns (Pteridospermae) Lycopsids Sphenopsids THE PENNSYLVANIAN The Age of Coal Swamps Pennsylvanian named by Henry S. Williams in 1891 Named for coal-bearing rocks deposited in Pennsylvanian Upper Carboniferous in Europe and Canada THE PENNSYLVANIAN THE PENNSYLVANIAN The Age of Coal Swamps THE PENNSYLVANIAN Orogenic Events Hercynian Orogeny THE PENNSYLVANIAN Orogenic Events Alleghenian Orogeny THE PENNSYLVANIAN The Age of Coal Swamps Alleghenian Orogeny THE PENNSYLVANIAN Orogenic Events Alleghenian Orogeny Begins formation of Pangaea Laurentia and Baltica collide to form LAURASIA Laurasia and Gondwana collide to form PANGAEA THE PENNSYLVANIAN Orogenic Events Alleghenian Orogeny THE PENNSYLVANIAN Orogenic Events Alleghenian Orogeny