The Jurassic Period
The Jurassic PeriodJohn Baffoe
OverviewThe Jurassic period, 206 to 144 MYA. Its 54 million
years of the Mesozoic Era.It gets its name from the Jura mountains
on the border between France and Switzerland.( where rocks of this
age were first studied)Where on present day earth can u find
Jurassic fossils?( Blue Nile Gorge, Ethiopia).(Solnhofen limestone,
Germany.Great plant-eating dinosaurs roaming the earth, feeding on
lush ferns and palm-like cycads and bennettitaleans smaller but
vicious carnivores stalking the great herbivores oceans full of
fish, squid, and coiled ammonites, plus great ichthyosaurs and
long-necked plesiosaurs vertebrates taking to the air.-University
of California Museum of Paleontology.
Jurassic PangaeaDuring the Early Jurassic Pangaea was beginning
to break up between Africa, modern America, and South America.
By Mid Jurassic, rifts were opening up the Central Atlantic
Ocean, and the Gulf of Mexico formed North America and Eurasia
began to spread forming the North Atlantic Ocean.Conditions,
climate was relatively warm and moist over much of Northern
America. Desert and seasonally wet conditions throughout Africa,
South America, and southern North America.PLANTSLarge Majority of
trees were ConifersLow latitude vegetation were ginkgoesThe shrubs
mostly consisted of ferns
Sea lifeRising sea levels flooded many of the continental
interiors during the Jurassic, creating warm, shallow-water
environments where marineanimals and plants could
thrive.microscopicphytoplankton-coccolithophores, dino flagellates,
and foraminifera.species of corals andsponges
PredatorsCephalopods- ammonoids and belemnites.Sharks and bony
fishes remained common and shared the seas with Ichthyosaurs,
Plesiosaurs and other marine reptiles.
Sea life
Fresh waterAmphibians-frogs, snakes, etcInvertebrates- ammonoids
belemnites, and etc.TurtlesSea lifeLARGE JURASSIC SHRIMP FOSSIL ON
UNBROKEN LIMESTONE PLATE MATRIX FROM SOLNHOFEN GERMANY
AGE OF THE DINOSAURS
HerbivoresSauropaodsApatosaurusBrachiosaurusDiplodocusKentrosaurusStegosaurusZigongosaurus
PredatorsMegalosaurusDiplodocidsBraciosauridsCetiosauridsAllosaursTyrannosaurusCryptoclidus(lockness
monster
The birdsArchaeopteryxpterosaurs
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