Order: Nautilida
of ammonoids and coleoids; Order Nautilida: nautilus and its fossil relatives.
Order: Nautilida
The body of the animal itself occupied only the last added chamber of the shell.
Chambered nautiluses are known as living fossils because they have remained virtually unchanged for millions of years.
1.7.2.3 Order Nautilida (Chambered Nautilus); 1.7.2.4 Order
Despite this rich fossil record, only six closely related species of this genus are ...
Phylum: Mollusca Class: Cephalopoda Order: Nautilida Family:
Nautiloid. The pearly nautilus has a smooth, coiled external shell about 25 cm (10
Order Ammonitida (ammonites). Genus Baculites. Genus Dactylioceras. Order Belemnitida (Belemnites). Genus Belemnitella. Order Nautilida (Chambered ...