the devonian
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THE DEVONIAN
Life in the Devonian
Sponges with glass skeleton
Hydnoceras leftHindia above
THE DEVONIANLife in the Devonian
Sponges and tabulate coral reefs
THE DEVONIANLife in the Devonian
Devonian corals
RugoseCorals
Petoskey StoneTabulate coral
State fossil of Michigan
THE DEVONIANLife in the Devonian
Spiriferid brachiopods
THE DEVONIANLife in the Devonian
Goniatite cephalopods
Suture pattern more complex than Nautiloid
THE DEVONIANLife in the Devonian
FishPlacoderms expanded rapidly in Devonian
Dunkleosteus
Arthrodires - carnivorous
THE DEVONIANLife in the Devonian
FishPlacoderms expanded rapidly in Devonian
Antiarchs – mud-grubbers
Pterichthyoides aboveBothriolepis right
THE DEVONIANLife in the Devonian
FishChondrichthyan fish – cartilagenous fish
Cladoselache
THE DEVONIANLife in the Devonian
FishOsteichthyan fish – bony or ray-finned fish
Cheirolepis
THE DEVONIANLife in the Devonian
FishOsteichthyan fish – lobe-finned fishLed to tetrapods
Dipterus
THE DEVONIANLife in the Devonian
Eurypterids
Eurypterus remipes
THE DEVONIANLife in the Devonian
Plants
Aglaophyton leftRhynia centerHorneophyton right
THE DEVONIANLife in the Devonian
Plants
LycopsidsPteridophytes (seed ferns)Sphenopsids (Calamites)
THE DEVONIANLife in the Devonian
Plants
THE DEVONIANLife in the Devonian
Plants
THE MISSISSIPPIANThe Age of Crinoids
Mississippian named byAlexander Winchellin 1870
Named for carbonate rocksdeposited in theUpper MississippiRiver valley
Lower Carboniferous inEurope and Canada
THE MISSISSIPPIAN
THE MISSISSIPPIANThe Age of Crinoids
Acadia highlands reduced
Decrease in muddy sediments
Paleozoic flooding by epeiric seas
THE MISSISSIPPIANThe Age of Crinoids
THE MISSISSIPPIANMississippian Tectonics
THE MISSISSIPPIANMississippian Tectonics
THE MISSISSIPPIANThe Age of Crinoids
Acadia highlands reduced
Decrease in muddy sediments
Paleozoic flooding by epeiric seas
THE MISSISSIPPIANThe Age of Crinoids
Crinoids abundantOoids abundant
Clear, shallow marine water
Salinity higher than normal
Mississippian Lime Bank
THE MISSISSIPPIANThe Age of Crinoids
Late Mississippian the Kaskaskia sea retreated
THE MISSISSIPPIANThe 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 MISSISSIPPIANThe Age of Crinoids
Erosion of Acadian highland produced Pocono Ss.
Forms resistant ridges of the Pocono Mtns.
Forms third clastic wedge
THE MISSISSIPPIANThe Age of Crinoids
Erosion of Acadian highland produced Pocono Ss.
THE MISSISSIPPIANThe Age of Crinoids
Life in the Mississippian
Rugose corals common
THE MISSISSIPPIANThe Age of Crinoids
Life in the Mississippian
Archimedes common bryozoan
THE MISSISSIPPIANThe Age of Crinoids
Life in the Mississippian
Bivalves uncommon
Goniatite cephalopods
Graptolites go extinct
THE MISSISSIPPIANThe Age of Crinoids
Life in the Mississippian
Crinoids abundant
THE MISSISSIPPIANThe Age of Crinoids
Life in the Mississippian
Insects become abundant
Forests includeSeed ferns (Pteridospermae)LycopsidsSphenopsids
THE PENNSYLVANIANThe Age of Coal Swamps
Pennsylvanian named byHenry S. Williamsin 1891
Named for coal-bearing rocks deposited in
Pennsylvanian
Upper Carboniferous inEurope and Canada
THE PENNSYLVANIAN
THE PENNSYLVANIANThe Age of Coal Swamps
THE PENNSYLVANIANOrogenic Events
Hercynian Orogeny
THE PENNSYLVANIANOrogenic Events
Alleghenian Orogeny
THE PENNSYLVANIANThe Age of Coal Swamps
Alleghenian Orogeny
THE PENNSYLVANIANOrogenic Events
Alleghenian Orogeny
Begins formation of Pangaea
Laurentia and Baltica collide to form LAURASIA
Laurasia and Gondwana collide to form PANGAEA
THE PENNSYLVANIANOrogenic Events
Alleghenian Orogeny
THE PENNSYLVANIANOrogenic Events
Alleghenian Orogeny
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