Fossil Crossword
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Down:
1. a method that measures the physical
properties of an object itself and use these
measurements to calculate its age.
2. Products of cellular biosynthesis that are
incorporated into sediments and eventually
into a rock.
4. a method that estimates whether an object
is younger or older than other things found
at the site
5. Fossilized remains of an animal or plant,
like bones, shells, and leaves.
6. fossil that is useful for dating and
correlating the strata in which it is found.
8. Marks left by an animal or plant that has
made an impression.
12. the remains or impression of a prehistoric
organism preserved in petrified form or as a
mold or cast in rock.
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Across:
3. volution of a new species through a large
scale change in gene frequency so that the
new species replaces the old
7. When an organism dies and is buried in
sediment, the materials that make the
organism break down and eventually only
the carbon remains.
9. an animal of a large group distinguished by
the possession of a backbone
10. A member of the horse family.
11. When watery solutions of various minerals
speed through the sediments and it takes
the shape of some plant part or animal.
13. An evolutionary splitting event in which
each branch and its smaller branches forms
a clade.
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