Nautiloids – jet-propelled predators

(nor-til-oids)

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Model of a nautiloid cephalopod.
Image: Benjamin Healley
Source: Museum Victoria

Fossil of the nautiloid cephalopod, Endoceras wahlenbergi.
Image: Benjamin Healley
Source: Museum Victoria

Silurian

HOW BIG IT WAS

Nautiloids relative size depiction as described below
Endoceras was 45–50 cm long.

The oceans were home to a new type of predator – fast-swimming, jet-propelled molluscs called cephalopods, with keen senses and a cluster of grasping tentacles. The first cephalopods like Endoceras had cone-shaped shells. Later cephalopods had shells that were coiled or became enclosed within the body. This last group were the ancestors of modern squids, cuttlefishes and octopuses.

A TRAIL THROUGH TIME

Cephalopods first appeared in the Silurian and survive to this day. See how this group has changed over time.

Ptenoceras GoniatitesParalegocerasCladiscitesBelemnitesBostrychoceras

WHERE IT WAS FOUND

Nautiloids map

This fossil of Endoceras wahlenbergi was discovered in Sweden.

RELATED OBJECTS

Other objects from the Silurian

BaragwanathiaEurypteridsPeriechocrinus Kalbarria

Related Resources

MV Resources