Psiloceratoidea is a superfamily of Early Jurassic ammonoid cephalopods proposed by Hyatt in 1867, assigned to the order Ammonitida. They were very successful during Hettangian and Sinemurian. Last of them, family Cymbitidae and genera Hypoxynoticeras and Radstockiceras survived into Early Pliensbachian.
Alvania gallinacea is a species of minute sea snail with an operculum, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Mitromorpha zilpha is a species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.
Carinodrillia braziliensis is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids.
Inquisitor aesopus is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.
Cymatosyrinx carpenteri is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
Splendrillia lucida is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
Splendrillia suluensis is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
Clavus humilis is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.
Calliotropis multisquamosa is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae.
Calliotropis pagodiformis is a species of sea snail, a marine gastropod mollusk in the family Eucyclidae.
Calliostoma yucatecanum, common name the depressed top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Morrowites, named by Cobban and Hook, 1983, is a moderate to large-sized ammonite with quadrangular to depressed whorls, broadly rounded to depressed venter, low ribs, umbilical and inner and outer ventrolateral tubercles and smooth early whorls except for occasional ribs along weak constrictions. The suture is moderately simple and has an unusually broad bifid first lateral lobe. It is so far restricted to the Lower Turonian stage, in the mid Cretaceous.
Macrocephalites is a genus of the stephanoceratoid ammonite family Macrocephalitidae, diagnostic of the Callovian stage of the Middle Jurassic. Three subgenera, Dolikephalites, Kamptokephalites, and Pleurocephalites are recognized in addition to Macrocephalites itself, with Indocephalites tentatively included as the fourth.
Menuites is a genus of extinct ammonites, forming a rather small offshoot of Anapachydiscus with a fairly widespread distribution from the Upper Cretaceous Santonian and Campanian stages.
Calliostoma supragranosum Carpenter, 1864 is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae, which was formerly placed within the Trochidae or top snails. Its common name is the granulated top snail.
Nisiturris crystallina is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Cytharopsis butonensis is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
Oenopota aleutica is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
Mangelia limata is an extinct species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
