Ask Holly: Making Dinosaur Fossils and Eggs

BY  |  Thursday, May 31, 2012 10:00am  |  COMMENTS (1)

Last Friday my kids and I had an amazing time at Field Station:Dinosaurs. We were one of the lucky families to go on Press Day. Did we want the dino-tastic, dino-licous, dino-mite time to end? Heck no! Did we know what time it was? OOOHHH yeah—- it was  time to get our craftasaurus on and make our own fossils! The experience we had at the park just made us want to learn more and of course my kids being my kids wanted to know when we would be going on a archaeological dig. Who knew we could go on one over the weekend?

When I told my five year old we were going on a dino dig he asked me,” Will it be real Mommy?” I answered, the way at some point I will be getting the old sigh and eye-roll for, “It will be really fun!” So we went in search of the Baristasaurus whose entire species dropped dead 6 million years ago after reading their  first property tax bills.

Dinosaur bones and teeth (far left is unpainted)

Here is what you will need to make dinosaur fossils and eggs:

For the egg mix:

  • 1 1/4 cups of flour
  • 1 1/4 cups of dirt or garden soil
  • 1/2 cup of sand
  • 3/4 cup of salt
  • 1/2 cup of water

Mix all ingredients together with your hands.

For the  bones and baby dino fossils:

  • One package of Sculpy
  • White, brown and black acrylic paints
  • Small plastic dinosaurs usually sold in a tube of 12.

Step One: To make bones and teeth fossils, take Sculpy out of the package and mold as you would clay. I went to Yahoo images and searched for “dinosaur bones and teeth” to guide us in our sculpting. The “bones” should not look perfect as they are suppose to be millions of years old. Sculpy is a great product that is easy for kids to work with, dries hard as rock and is durable.

Mold over plastic dinosaurs

Step Two: Bake following the manufacturers directions. Ours were done in 15 short minutes, cooled in 5 minutes and ready to paint.

Step Three: Paint the bones and teeth white let dry. Add a bit of brown here and there and maybe a little black. Let paint dry.

Step Four: Take your egg mix and cover your bones or baby dinos. Either roll in the shape of an egg or for an archaeological dig look just make the shape free form covering the whole bone. Let dry for 3-4 days or put them in the oven at 265 degrees  for 60-90 minutes. Let cool before handling.

Break open depending how hard you let them get with a rock (for older children) or chip away at it with an old fork. Give the children brushes so they can really feel like archaeologists as they brush bits of dirt away as not to damage their rare finds


  • Turn the eggs every few days
  • If making these as a craft for a birthday party sent the egg home in a bag with instructions
  • For a hunt roll the eggs in glitter before they dry so they stand out a bit for little eyes to locate
  • After the dig is complete you can print out labels using a typewriter font on white tea or coffee stained paper. Cut the labels out and pin on either side next to each find. Use a shadowbox to frame your fossils for true dinosaur lovers wall.

Plastic Dinosaurs, Sculpy (usually found next to molding clay) and paint available at  AC Moore  and Michael’s

Got a bone to pick? Just Ask Holly!


  1. POSTED BY Tara Williams  |  May 31, 2012 @ 12:47 pm

    So cool!

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