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Life Science Week 7: Prehistoric Life

Across
The first ancient human skeleton was found in Neander Valley, ________.
A feathered dinosaur whose fossils have been found
Flowering plants
Down
The first dinosaur skeleton was what kind of dinosaur?
This prehistoric mammal came in all shapes and sizes, and remnants of them can be found all across North America.
The time period in which Tyrannosaurus Rex first appeared
This "quiet" period lasted for about 4 billion years.
The stone that is made when minerals harden in the mold of a living thing