| Lopha Temporal range: | |
|---|---|
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| Fossil Lopha sp. from Upper Cretaceous, France | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Ostreida |
| Family: | Ostreidae |
| Genus: | Lopha Röding, 1798 |
| Synonyms | |
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Lopha is a genus of marine bivalve molluscs in the family Ostreidae.
The genus Lopha is present from the Triassic period in the Lower Norian age (216.5 ± 2.0 – 203.6 ± 1.5 Mya) to the recent age.
Lopha species have thick, strongly ribbed shells with unequal valves. The margins of the valves have a characteristic zig-zag pattern. The lower valve shows finger-like outgrowths, by which the molluscs adhere to the substrate. These molluscs are stationary, epifaunal, suspension feeders, as they feed by filtering sea water to extract the nutrients.
The Ostreidae, the true oysters, include most species of molluscs commonly consumed as oysters. Pearl oysters are not true oysters, and belong to the order Pteriida.
Strombus is a genus of medium to large sea snails, marine gastropod molluscs in the family Strombidae, which comprises the true conchs and their immediate relatives. The genus Strombus was named by Swedish Naturalist Carl Linnaeus in 1758. Around 50 living species were recognized, which vary in size from fairly small to very large. Six species live in the greater Caribbean region, including the queen conch, Strombus gigas, and the West Indian fighting conch, Strombus pugilis. However, since 2006, many species have been assigned to discrete genera. These new genera are, however, not yet found in most textbooks and collector's guides.
Pholadidae, known as piddocks or angelwings, are a family of bivalve molluscs similar to a clam.
Venus is a genus of small to large saltwater clams in the family Veneridae, which is sometimes known as the Venus clams and their relatives. These are marine bivalve molluscs.
Ostrea is a genus of edible oysters, marine bivalve mollusks in the family Ostreidae, the oysters.
Unio pictorum, the painter's mussel, is a species of medium-sized freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.
Cyphoma is a genus of predatory tropical sea snails, a taxonomic group of marine gastropod molluscs in the family Ovulidae, a family which is sometimes known as the false cowries or cowry allies.
Pinna is a genus of bivalve molluscs belonging to the family Pinnidae. The type species of the genus is Pinna rudis.
Vasum, common name the vase snails or vase shells, is a genus of mostly rather large predatory sea snails, marine gastropod mollusks in the subfamily Vasinae within the family Turbinellidae.
Cypraecassis is a genus of medium-sized to large sea snails, marine gastropod molluscs in the family Cassidae.
Anomia is a genus of saltwater clams, marine bivalve mollusks in the family Anomiidae. They are commonly known as jingle shells because when a handful of them are shaken they make a jingling sound, though some are also known as saddle oysters.
Lyncina is a genus of sea snails, marine gastropod molluscs in the family Cypraeidae, the cowries.
Venerupis is a genus of marine bivalve molluscs in the family Veneridae commonly known as carpet shells. The valves are robust and rhomboidal with the umbones turned-in and nearer the anterior end. The posterior end is wedge-shaped and the internal margins of the valves are smooth. There are 3 or 4 cardinal teeth on each valve. The foot is large and the siphons are of medium length and united except at the very tip.
Kuphus is a genus of shipworms, marine bivalve molluscs in the family Teredinidae. While there are four extinct species in the genus, the only extant species is Kuphus polythalamius. It is the longest bivalve mollusc in the world, where the only known permanent natural habitat is Kalamansig, Sultan Kudarat in the Philippines.
Acanthocardia is a genus of saltwater clams, marine bivalve molluscs in the family Cardiidae. They are infaunal suspension feeders.
Glycymeris, common name the bittersweet clams, is a genus of saltwater clams, marine bivalve molluscs in the family Glycymerididae.
Panenka is a genus of fossil saltwater clams, marine bivalve molluscs in the family Praecardiidae. Like most bivalves, these molluscs were suspension feeders. They lived in the Devonian Period.
Lunulicardia is a genus of saltwater clams, marine bivalve molluscs in the family Cardiidae, the cockles. Fossils species in this genus are present in the Pliocene deposits of Indonesia and the Miocene deposits of Russia.
Lopha marshii is a fossil species of true oyster, a marine bivalve mollusc in the family Ostreidae, the true oysters. This species was present in the Bajocian age.
Callista is a genus of saltwater clams, marine, bivalve molluscs in the family Veneridae, the venus clams.
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