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Cards (23)
What is the current eon we are living in?
Phanerozoic Eon
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What are the three eras of the Phanerozoic Eon?
Paleozoic Era
(The Old Life)
Mesozoic Era
(The Middle Life)
Cenozoic Era
(The Recent Life)
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How many periods is the Paleozoic Era divided into?
Six
periods
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What is the first period of the Paleozoic Era?
Cambrian Period
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What significant event occurred during the Cambrian Period?
Massive occurrence of
evolution
and divergence
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What are the years for the Ordovician Period?
448 to
444
million
years ago
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What happened during the Silurian Period?
Marine life further differentiated
First Osteichthyes appeared
Placodermis emerged in late Silurian
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What is the nickname for the Devonian Period?
Age of Fishes
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What significant evolutionary event occurred in the Devonian Period?
Increase in fish species and
emergence
of
tetrapods
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What is one of the first known tetrapods from the Devonian Period?
Tiktaalik rosae
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What are the two sub-periods of the Carboniferous Period?
Mississippian Period
Pennsylvanian Period
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What is the significance of the Carboniferous Period?
Longest period of the
Paleozoic Era
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What notable life forms appeared during the Mississippian Period?
First group of
club-shaped
fungi
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What characterized the Pennsylvanian Period?
Further establishment of
terrestrial
life
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What is the time frame for the Permian Period?
299
to
251 million years ago
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What is significant about the fossils found in the Permian Period?
Fossils have
vessel elements
Similar structure to extant
gymnosperms
Similar structure to
angiosperms
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What is the nickname for the Mesozoic Era?
Age of Reptiles
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What is the time frame for the Triassic Period?
251
to
200
million years ago
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What characterized the Jurassic Period?
Large plant-eating dinosaurs
New groups of amphibians, reptiles, mammals
Emergence of predatory dinosaurs like
Tyrannosaurus rex
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What is the last period of the Mesozoic Era?
Cretaceous Period
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What significant events occurred during the Cretaceous Period?
First appearance of
flowering plants
Emergence of
bees
, ants,
water lilies
Dinosaurs continued to dominate
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What is the first period of the Cenozoic Era?
Paleogene Period
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What was the impact of the demise of the dinosaurs?
Gave way to the dominance of
mammals
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