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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:

To learn more about fossil collecting, please go to one of our other websites: 

To learn more about shells, rocks, and other specimens you may have collected in the "salted sandbox," go to this page.


Fossil shark and ray teeth from Africa

These 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 times.

We 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):
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In 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 in Evanston:
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You can buy Moroccan shark teeth by the pound from online fossil dealers like Sharky's Shop or on EBay.


Fossil shark and ray teeth from Florida 

The dark-gray and black fossils of shark and ray teeth were collected in Florida.  The 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.  

Some 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 that.  However, none are as old as the dinosaurs.

We bought the fossil-rich black pebbles from, 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 EBay.


Crinoid stems and other fossil sea life from Indiana  

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 animals:

Crinoids 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:
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To learn more about the reddish fossils, please go to this web page:
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Fossil plants from Illinois

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.

Unfortunately, there aren't any Mazon Creek websites developed especially for children.  Visit these websites to see pictures and learn more about Mazon Creek Fossils:
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Copyright 2006-2009 Eric D. Gyllenhaal                                              Search this Site

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This page was created on June 6, 2004, and it was last updated on November 7, 2009.