bivalve shell

Herbert ran to the beach and returned with two large bivalve shells.

"On the generic name of a remarkable bivalve shell found in the Congo".

It is often found in empty bivalve shells and moist rock crevices.

Snuff boxes were also sometimes made from bivalve shells.

From this, the scallop and other bivalve shells came to be used as a symbol for fertility.

In many (but by no means all) bivalve shells, the two valves are symmetrical along the hinge line.

The bivalve shell is composed of two calcareous valves.

Several species of wrasses have been observed using rocks as anvils to crack bivalve shells.

A pearl forms when something like a grain of sand gets inside the bivalve shell right between the mantle and the shell.

The hinge teeth (dentition) or lack of them is an important feature of bivalve shells.

The hinge ligament of a bivalve shell can be either internal, external, or both, and is an example of complex development.

"That's one of those bivalve shells,' Temma said, impressed.

The bivalve shell is usually 91 cm (3 feet) long, and its shape differs depending on the region it enhabitates.

For instance, unionid bivalve shells exhibit uniform banding patterns.

Accordingly, (secondary) phosphate is generally only preserved in enclosed spaces, such as a tightly-closed bivalve shell.

Encrusting species can be especially numerous in cryptic habitats, for example, the concave interiors of bivalve shells.

The position of the pallial sinus is often clearly visible as a shiny line on the inside of the bivalve shell.

A bivalve shell is part of the body, the exoskeleton or shell, of a bivalve mollusk.

Some bivalve shells have large "cardinal" teeth on the hinge immediately below the umbone, but the spiny scallop does not.

The word is not used to describe bivalve shells, where a natural opening between the two shell valves in the closed position is usually called a gape.

Some bivalve shells have been found with both parts still joined, and include both brachiopods and bivalve molluscs.

When it grows on a stone or an empty gastropod or bivalve shell it may completely engulf it.

The transition from dry winters to rainy summers is therefore recorded in these alternating patterns of light and dark bands on the unionid bivalve shells.

The resilium is part of the hinge mechanism in certain taxonomic families of bivalve shells, such as oysters and scallops.

This cowry lives in intertidal rocky areas and shallow tide pools among sea weed, coral remains, and empty bivalve shells.