1. Nautiloid cephalopods are represented by tightly coiled ammonoids are common.2. Orthocerids are prehistoric shelled cephalopods included in the mostly orthoconic nautiloid superorder Orthoceratoidea. 3. Ellesmerocerida comprise the ancestral nautiloid stock from which all other cephalopod orders were derived. 4. Five major nautiloid orders are derived from Ellesmerocerida. 5. She explored much of western Queensland, studying the fossils of early nautiloid molluscs. 6. It is assigned to the nautiloid order Discosorida. 7. Orthoceratoids are slender conical or near cylindrial, orthoconic, nautiloid cephalopods from the Paleozoic. 8. These surprising results made us wonder if nautiloid fossils might also have some secrets to reveal. 9. Illithids'primary ship type is the nautiloid , a 35-ton craft resembling a nautilus. 10. "Dolorthoceras " is recognized as a pseudorthocerid, nautiloid cephalopods that resemble but are not true orthocerids.
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