The Corona genus consists of air-breathing, land-dwelling snails. All Corona snails live in the tropical rainforests of South America. South American countries within the Corona snails' ranges are Brazil, Ecuador, Guiana, Bolivia, Colombia, Peru and Venezuela. Corona regalis, Corona pfeifferi, Corona regina, Corona rosenbergi and Corona perversa are some of the species in the Corona snail genus.
All Corona genus snails belong to the Orthalicidae family of gastropods. This family features three subfamilies: Orthalicinae -- the subfamily of Corona snails -- Bulimulinae and Amphibuliminae. Orthalicidae snails are native to the tropical rainforests of southern Mexico, Central America and South America. These snails grow between 2 to 4 inches in length. Orthalicinae is the smallest subfamily in the Orthalicidae family with six genera representing nearly 40 species. Most Orthalicidae family snails have elongated or medium-sized shells and long tails.
Gastropoda is the taxonomic class that represents all snail species, including specimens in the Corona genus. Also known as gastropods, this class of animals is one of the most diverse in terms of habit, habitat and form, according the University of California Museum of Paleontology. Some gastropods live in underwater, marine environments, while others are land-dwelling species, including the Corona genus snails. The food requirements of gastropods vary and include snails with carnivorous, herbivorous or omnivorous diets. Aside from snails, gastropods also include animals such as whelks, conches, seashells and abalone. While most gastropods have shells for shelter, certain air-breathing slugs in the Systellommatophora class of gastropods do not.
The Mollusca phylum of animals features invertebrate classes of animals such as gastropods, cephalopods, chitons and bivalves. Next to arthropods, the Mollusca phylum is the second-largest group of invertebrates in the world. The majority of Mollusca animals are marine-dwelling species and have shells for protections. While their body structures are diverse, two common physical traits for all Mollusca animals are mantles for secreting the animal's shell, a visceral mass with breathing and digestive systems and a head-foot, which is used for locomotive and sensory purposes. The largest class in the Mollusca phylum is Gastropoda, the class of Corona snails.