The "'Lowoceratidae "'is a small family of nautiloid cephalopods, from the Middle Silurian in which the characteristic bullette is found only in early growth stages.
42.
""'Tainonautilus " "'is an extinct coiled cephalopod that lived during the Permian and Early Triassic which is included in the nautiloid family Tainoceratidae.
43.
Later, a scientific paper published in 1956 reported the presence of 17 species of nautiloid across 10 genera from a unit at the transition between the Cambrian and Ordovician in Virginia.
44.
""'Somalinautilus " "'is a genus of nautiloid that is found in the Middle to Upper Jurassic of England, France, and Somalialand.
45.
""'Hexameroceras " "'is a nautiloid genus belonging to the Oncocerida that lived during the middle and late Silurian some 422-416 Ma.
46.
""'Quebecoceras " "'is an extinct genus from the nautiloid order Ellesmerocerida that lived during the Gasconadian Stage at the beginning of the Early Ordovician.
47.
""'Pseudactinoceras " "'is an extinct nautiloid cephalopod included in the order Pseudorthocerida and the namesake of the family Pseudactinoceratidae ( Sweet, 1964 ).
48.
Nautilids are a type of nautiloid, a subclass of shelled cephalopods that were once diverse and numerous but now only represented by " Nautilus " and " Allonautilus"
49.
A . K . Miller and W . M Furnish described " Geisonocerina " among a suite of 12 nautiloid genera from the Ordovician of the Black Hills, South Dakota.
50.
""'Eburoceras " "'is an early nautiloid cephalopod from the Upper Yenchau and Wanwankau, Upper Cambrian Trempealeauan of China, assigned to the Ellesmeroceratidae.
