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The Arcida is an extant order of bivalve molluscs. [1] This order dates back to the lower Ordovician period. They are distinguished from related groups, such as the mussels , by having a straight hinge to the shells, and the adductor muscles being of equal size. [ 2 ]
Glycymerididae, often misspelled as Glycymeridae, common names dog cockles or bittersweets, is a worldwide family of salt water clams, marine bivalve mollusks in the order Arcida. They are related to the ark clams. This family contains 45 extant species in four genera.
Ark clam is the common name for a family of small to large-sized saltwater clams or marine bivalve molluscs in the family Arcidae. Generally less than 80 mm long, ark clams vary both in shape and size. They number about 200 species worldwide. [1]
The Pteriomorphia comprise a subclass of saltwater clams, marine bivalve molluscs. [1] It contains several major orders, including the Arcida, Ostreida, Pectinida, Limida, Mytilida, and Pteriida. It also contains some extinct and probably basal families, such as the Evyanidae, Colpomyidae, Bakevelliidae, Cassianellidae, and Lithiotidae.
Noetiidae is a family of saltwater clams, marine bivalve molluscs in the order Arcida. [1] [2] They are related to the ark clams and used to be classified as among them. They are differentiated from the ark clams by the presence of striations on the hinge ligament and on the placement of this ligament. Like the ark clams, however, their shells ...
Arca zebra is a protandric hermaphrodite, a type of sequential hermaphrodite with individuals starting out as males and developing female reproductive capacity later in the life cycle. [6]
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The blood cockle is the main clam variety raised in the mud flats of Anhai Bay off Shuitou, Fujian. [4] Capture (blue) and aquaculture (green) production of Blood cockle (Tegillarca granosa) in thousand tonnes from 1950 to 2022, as reported by the FAO [5]