Earth System History
Quiz 18: The Paleogene World
The Earliest Primates Evolved During
The earliest primates evolved during A) Late Cretaceous. B) Middle Paleocene. C) Late Paleocene. D) Early Eocene.
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New Paleogene predators included the huge flightless birds called __________, which were the dominant predators of the forested ecosystems through Eocene. A) mesonychids B) bronototheres C) diatrymas D) creodonts
On the plains of Nebraska and South Dakota, the large Early Oligocene top predator was A) Brontotherium. B) Protapirus. C) Merycodon. D) Hoplophoneus.
In the rock record, the Paleocene-Eocene transition is marked by an abrupt shift of oxygen isotope ratios toward __________ values, signaling the onset of a much __________ interval of Earth history. A) lighter; cooler B) lighter; warmer C) heavier; cooler D) heavier; warmer
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