History of Earth Crossword

The action of placing one thing on or above another
The remains or impression of a prehistoric organism
The science of determining the relative order of past events
Helps us to distinguish between rock strata from different times period
Name a fossil
A fossil fish of the late Devonian period
People/animal that eat meat
A mountain that has lava
Animals from billions of years ago
Species no longer exist
The measurement of age in years of an earth material that determines the measure of how old it is in years
Any method of determining the age of earth materials or objects of organic origins
7 million years ago
How many years ago did humans evolve
A Norwegian island in the Svalbard archipelago
A rock or fossil that is not an exact number or age
Between 4.5 and4.8 billion years old
A subdivision of geologic time that divides an epoch into smaller parts
A subdivision of geologic time
The extinction of a large number of species within short period of time
A fossil that is useful for dating and correlating the strata in which it is found
Plants which are native to the tropical regions of world
Formed by accumulation or deposition of small particles
Name a fossil
Any of a large class of echinoderms
Relating to sediments
A solid inorganic substance of natural occurrence