calcareous

They are frequently found in water charged with calcareous material.

When their food ran out they died, leaving behind calcareous tubes.

He swung again, then a third time and calcareous matter crumpled.

What has become of the granite and the calcareous deposits?

It is found only on calcareous substrates such as limestone.

A number of calcareous fens have developed along the south shore.

It is typically found in neutral, basic or calcareous soils.

On the southern end of the beach rises a steep calcareous rock.

At the front end of the animal are two triangular, calcareous plates.

When adult, they have a calcareous shell composed of several pieces.

Members of this order have calcareous skeletons, and are strictly marine.

There is also a strong calcareous component to much of the areas soils, especially away from the slopes.

All the reefs I have myself seen could be associated only with nearly pure calcareous rocks.

It also seems to favor calcareous substrates such as limestone.

Generally speaking, the farther from land sediments fall, the less calcareous they are.

And it is enclosed by the calcareous walls of the same massif.

Often they have a hard calcareous layer at 0.5 to 1 metre depth.

"The surface still had a calcareous scale adhering to it.

It lives in low altitudes on calcareous substrate, close to the coast.

It is often associated with limestone and other types of calcareous substrate.

Both the top and the underside of the disc are covered with calcareous plates.

The species in this genus all are restricted to calcareous rocks.

Here, the eruption of mineral springs through Calcareous rocks are seen.

It is a good example of a calcareous grassland.

Areas with suitable calcareous matter for building the shell are favoured.