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TF0512 - Straight nautiloid
Stratigraphic Range
Cambrian to Permian
Taxonomy
Phylum: Mollusca
Class: Cephalopoda
Class: Cephalopoda
Distinctive Features
Straight
Chambers
Septa
Chambers
Septa
Preservation
Manmade internal cast
Advanced notes
Nautiloids originated in the Cambrian and radiated during the Ordovician. Straight nautiloids went extinct in the Permian, but planispirally coiled nautiloids, for example the nautilus, live in the sea today.