Animalia > Mollusca > Bivalvia

Bivalvia (bivalves and clams)

Synonyms: Asiphonidae

Wikipedia Abstract

Bivalvia, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. Bivalves have no head, and they also lack a radula. They include clams, oysters, cockles, mussels, scallops, and numerous other families that live in saltwater, as well as a number of families that live in freshwater. The majority are filter feeders. The gills have evolved into ctenidia, specialised organs for feeding and breathing. Most bivalves bury themselves in sediment, where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other hard surfaces. A few bore into wood, clay, or stone and live inside these substances. So
View Wikipedia Record: Bivalvia


Actinodontida (69)
Adapedonta (277)
Afghanodesmatida (10)
Arcida (1,614)
Cardiida (3,508)
Carditida (1,464)
Colpomyida (5)
Cyrtodontida (128)
Fordillida (11)
Galeommatida (801)
Gastrochaenida (60)
Hippuritida (427)
Limida (601)
Lucinida (1,184)   (2)
Megalodontida (148)
Modiomorphida (112)
Myalinida (852)
Myida (1,093)   (1)   (5)
Mytilida (913)   (6)   (4)
Nuculanida (1,058)
Nuculida (566)
Ostreida (1,768)   (1)   (2)
Pectinida (3,022)
Solemyida (194)   (2)
Sphaeriida (767)   (7)
Trigoniida (2,231)
Tuarangiida (2)
Unionida (2,757)   (113)
Venerida (3,870)   (5)   (3)



External References

Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2023-06-13; License: CC BY 4.0