Specimens from Dino Works
On Saturday, November 7,
2009, Salt the Sandbox presented Dino
Works activities at Wonder Works. If you want more information about the fossils
we collected that day, please click on the specimen names:
learn more about fossil collecting, please go to one of our other
To learn more about shells, rocks, and
other specimens you may have collected in the "salted
sandbox," go to this page.
shark and ray teeth from Africa
tan and light-brown fossilized teeth came from the phosphate mines of Morocco (a country
in northwestern Africa). They are 50 to 70 million years old. The oldest ones came from sharks that lived during dinosaur
haven't found a kid-friendly Web site about these fossil teeth, but
here's an online fossil shop that has lots of photos of Moroccan shark
teeth (although it's kind of hard to use):
the Chicago area, you can small plastic boxes with 23 to 30 of these
teeth in many museum gift shops and at Dave's Down to Earth Rock Shop
can buy Moroccan shark teeth by the pound from online fossil dealers
like Sharky's Shop or on
dark-gray and black fossils of shark and ray teeth were collected in
most common fossils found in our gravel were sharp, slicing teeth from
sharks and flat, crushing teeth from rays.
Some children also found stingray stingers, bits of bone and
shell, spiral-shaped snail fossils, teeth or bones from bony fish,
like barracudas or drum fish, or from alligators.
of these fossils were from fish that lived during Ice Age times (from
10,000 to about 2 million years ago), and some were even older than
However, none are as old as the dinosaurs.
bought the fossil-rich black pebbles from FossilWeb.com,
where they are called "Paleo Pebbles." You
can buy Florida shark teeth by the pound from online fossil dealers
like Sharky's Shop or on
The small, reddish fossils at Dino
Works are 350-million-year-old sea animals. We collected the reddish
fossils in south-central Indiana on hilltops and along the shores of Lake Monroe.
The most common reddish fossils were pieces of stem from crinoid
are sometimes called sea lilies, but they are actually
animals related to sea stars. Broken stems of crinoids
look like beads.
Here's a Web page with
more information about fossil crinoids:
To learn more about the
reddish fossils, please go to this web page:
Our fossil plants were
found in coal mines about 50 miles southeast of Chicago, in an area
known as Mazon Creek. Tree-sized ferns, giant club mosses, and
many other plants lived here during the Coal Age, about 300 million
years ago. The Mazon Creek area is also well known for the many
types of animals preserved as fossils -- including soft animals like
jellyfish and worms.
aren't any Mazon Creek websites developed especially for
children. Visit these websites to see pictures and learn more
about Mazon Creek Fossils: