by Emma Louise Oldham September 18, 2019

These rock-like relics are sure to bring out your inner palaeontologist. Not only are they fun and tactile to make, but the outcome is really impressive! You can create whatever you like: a fossilised dinosaur, shell or plant!


What you need:

  • Modelling clay
  • Plaster of Paris
  • Toy dinosaur or chosen animal/plant
  • Cup (one you don’t mind getting dirty)
  • Stirrer
  • Water
  • Coffee
  • Paintbrush

What to do:

Step 1: Make a circle out of your clay, saving around a third of it.

Step 2: Gently press the area of your dinosaur that you want to focus on. Usually, the head looks best. Remove the toy.

Step 3: Use your remaining clay to create a circular wall around your dinosaur print. It should look like a little bowl.

Step 4: Prepare the plaster of Paris in your cup, following its instructions. Typically, you mix three parts of powder to every two parts of water. Give it a good stir.

Step 5: Pour the plaster of Paris mixture into the centre of the fossil. Don’t fill it any higher than your wall. Wait at least two hours for it to dry.

Step 6: Gently peel away the clay from the sides and front of the fossil. Leave to dry for another 12 hours. Don’t worry if you still have some clay stuck to the fossil – it will easily come off when dry.

Step 7: Once dry, use the end of a paintbrush to gently scrape away any clay.

Step 8: With the help of an adult, make a small amount of coffee. Use this to paint your fossil. This will make it look ancient and made from real rock. Ta-da! Your fossil is complete!


Leave a comment

Comments will be approved before showing up.


In other Eco Kids Planet News

Monthly competition: Wetland Creature
Monthly competition: wetland creature

by Elise Chalumeau March 30, 2021

In our ‘Wetland Wildlife’ issue, we asked you to design your own wetlandcreature. Thanks a million to everyone who entered the competition!Your creativity was out of this world! Congratulations to our five winners! Finley, age 6, Woodbridge "Chinese Black Western Greater Vole" Here is my wetland c...

Monthly competition: Primate Face Mask
Monthly competition: primate face mask

by Elise Chalumeau March 03, 2021

In our ‘Primates of the World’ issue, we asked you to design a face mask featuring your favourite primate. Thank you to everyone who entered the competition. Your wonderful designs certainly put a smile on our faces! Congratulations to our five winners! Akemi, age 7, Stone Bush Baby Face Mask   Ge...

World Hippo Day: Five Top Facts
World hippo day: five top facts

by Chloe Petrylak February 15, 2021

To mark this year’s World Hippo Day on 15th February, we’re diving in at the deep end with these humongous hoofed mammals, which are considered to be one of the most dangerous African mammals on the planet. 1) TREMENDOUS TUSKS The teeth at the front of a hippo’s mouth are actually tusks. Hippos, how...