Orthocone nautiloids were extinct ancestors of the tightly coiled Pearly Nautilus that is still found swimming in the deep oceans. Orthocones were distant relatives of extinct ammonites and modern squid and octopus. Orthocones lived from about 500 million years ago until nearly 200 million years ago. The soft body and tentacles are rarely preserved as fossils but the hard shells are often fossilised in large numbers.

Download and assembly instructions

1. Download cut-out model of the Orthocone nautiloid in colour 149 KB pdf or in black and white to colour in 95 KB pdf
2. Cut around the 2 parts of the model - you may need to get an adult to help you
3. Head: Fold flaps inwards
4. Bend into a cone shape and glue long flaps together
5. Shell: Fold flap
6. Bend shell into a cone shape and glue along flap
7. Glue head to inside of shell

What you will need: printed copy of the pdf glue or sticky tape scissors
Folding and assembling the model: cut out both parts of the model
Fold long flap on side of shell inwards
Bend shell into cone shape and glue or tape flap to inside of cone
Bend head and tentacles into tube shape and glue or tape long tabs together
Glue or tape head to inside of shell using tabs at back of head
Finished nautiloid model

Further information

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