Examlex
An x-ray determines that Peter fractured the shaft of his humerus. The break is in the ________ of the bone.
Geologic Timescale
A system used by geologists to describe the timing and relationships between events that have occurred throughout Earth's history.
Stratigraphic Timeline
A chronological ordering of layered sedimentary rocks, representing the sequential events in the Earth's geologic history.
Mesozoic Era
A major subdivision of geologic time from 251 million years ago (Ma) to 65 Ma; characterized by dinosaurs.
Jurassic Period
A geologic period and system that occurred about 201 to 145 million years ago, known for the prevalence of dinosaurs and the breakup of the supercontinent Pangea.
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