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All
Orders Include Free Shipping to U.S. Addresses! |
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Looking
for a unique gift idea?
Puzzle Boxes make great hiding places for
your treasured keepsakes, and are fun for all ages!
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Sand Dollar Fossils
(Pygurus marmonti)
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These polished
Sand Dollar Fossils from Madagascar date from the Jurassic Period, and are
150 million years old. Sand Dollars are a type of sea urchin
that buries itself in sand.
(You will receive the
exact specimen shown in each photo.)
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Sand
Dollar Fossil
(A)
2.5" x 2.4" x 0.75"
$15.00
Add to Cart
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Sand
Dollar Fossil (B)
2.5" x 2.5" x 0.75"
$15.00
Add to Cart
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Sand
Dollar Fossil (C)
2.5" x 2.5" x 0.75"
$15.00
~ SOLD ~
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Sand
Dollar Fossil (D)
2.5" x 2.3" x 0.75"
$15.00
Add to Cart
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Sand
Dollar Fossil (E)
2.35" x 2.25" x 0.75"
$15.00
Add to Cart
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Sand
Dollar Fossil (F)
2.5" x 2.4" x 0.75"
$15.00
Add to Cart
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(On this page,
you will receive the exact specimen shown in each photo.)
Sand
Dollar Fossil (G)
2.5" x 2.1" x 0.75"
$15.00
Add to Cart
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Sand
Dollar Fossil (H)
2.1" x 2.1" x 0.75"
$15.00
Add to Cart
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Sand
Dollar Fossil (I)
2.7" x 2.4" x 0.75"
$15.00
~ SOLD ~
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Sand
Dollar Fossil (J)
2.5" x 2.4" x 0.75"
$15.00
Add to Cart
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Sand
Dollar Fossil (K)
2.7" x 2.5" x 0.75"
$15.00
Add to Cart
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Sand
Dollar Fossil (L)
2.6" x 2.5" x 0.75"
$15.00
~ SOLD ~
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(On this page,
you will receive the exact specimen shown in each photo.)
How Do Fossils Form?
Most animals and plants don't turn
into fossils after they die. Conditions have to be just
right, including rapid burial by sediments. The sea floor
is an ideal environment for fossilization, which is why so many
fossils are marine creatures.
After a marine organism dies, it
sinks to the sea floor, where it gets buried by sediments like
mud and sand that fall from the ocean above. The remains
eventually decay, leaving only the skeleton, and accumulating
pressure turns the surrounding sediments into rock. Over
time, water seeps through the rock and dissolves the skeleton,
leaving behind an empty cavity or mold that preserves the
original shape.
Over time, water rich in minerals
seeps into the cavity, and the minerals crystallize to fill the
cavity and form a cast. Millions of years later, geologic
forces bring the fossil-containing rock to the earth's surface,
where it may be eroded by wind and rain, exposing the fossil to
discovery.
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All
Orders Include Free Shipping
to U. S. Destinations! |
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