Hexasterophora are a subclass of sponges, in the class Hexactinellida. The Hexasterophora first appeared in the Ordovician and is separated into five recent orders, including the Lyssacinosa, the Hexactinosa, and the Lychniscosa, all of which have living representatives in the seas today.
Heterodonta is a taxonomic subclass of saltwater clams, marine bivalve molluscs. This subclass includes the edible clams, the cockles and the Venus clams.
Tegula is a genus of small to medium-sized sea snails, marine gastropod molluscs in the family Tegulidae.
The Trochidae, common name top-snails or top-shells, are a taxonomic family of very small to large sea snails, marine gastropod molluscs in the clade Vetigastropoda.
Atlanta is a genus of pelagic marine gastropod molluscs in the family Atlantidae. They are sometimes called heteropods.
Carcharias is a genus of sand tiger sharks belonging to the family Odontaspididae.
Batillaria is a genus of small salt marsh or mudflat snails, marine gastropod mollusks in the family Batillariidae, the horn snails.
Hipponicidae, common name hoof shells or hoof snails, is a family of small sea snails, limpet-like marine gastropod molluscs in the superfamily Vanikoroidea.
Turritriton is a genus of medium-sized sea snails, marine gastropod molluscs in the family Cymatiidae. This is often still regarded merely as a subgenus of the genus Cymatium.
Lottiidae is a family of sea snails, specifically true limpets, marine gastropod mollusks in the superfamily Lottioidea and the clade Patellogastropoda.
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms.
Isidella is a genus of deep-sea bamboo coral in the family Isididae.
Pyramidella is a genus of minute to medium-sized sea snails, marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Scleraxonia is a suborder of corals, a member of the phylum Cnidaria.
Leucotheidae is a family of ctenophores. It contains a single genus, Leucothea.
Paul Russell Krutak was an eminent American micropaleontologist. He received his Bachelor's and master's degrees in Geology at Louisiana State University (LSU) in Baton Rouge, as well as a Ph.D. in Geology at LSU in 1963. His dissertation was entitled Structure, Stratigraphy, and Provincial Relationships of Sierra de la Gavia, Coahuila, Mexico.
Lyria (Plicolyria) is a subgenus of sea snail, a marine gastropod mollusk in the family Volutidae.
Pachybathron cassidiforme is a species of sea snail, a marine gastropod mollusk, in the family Cystiscidae.
Crassatelloidea is a superfamily of bivalves in the order Carditida. In the World Register of Marine Species (WoRMS), Astartoidea is considered a junior synonym of Crassatelloidea, whereas in ITIS Astartoidea is a separate family containing Astartidae and Cardiniidae – Cardiniidae itself being classified instead in Carditoidea by WoRMS.
