0 a type of mollusc, such as an oyster, that has its body inside two connected shells: --
1 having a body inside two connected shells: --
a bivalve mollusc
Brachiopods, cephalopods (ammonoids and one nautiloid) and bivalves are rare.
It is immediately clear that anybody seriously interested in the evolution of bivalves should study it.
Image analysis : a new method for estimating triploidy in commercial bivalves.
The fauna is limited to ammonites and a species of epifaunal bivalve.
These modes of deposition facilitated preservation of dinosaur trackways, desiccation cracks, shallow-tier trace fossils and in situ bivalve colonies through rapid burial.
Abundant concretions at several levels contain well-preserved ammonoids, bivalves and occasional fish.
They include deposit and suspension feeding polychaetes, bivalves, and crustaceans as well as endobenthic predatory polychaetes and nemertines.
Both bivalves were used to extract haemolymph on the same day.
