Fossil group

Miliolids

Foraminifera · Carboniferous – Recent

Porcelaneous benthic foraminifera whose imperforate, glossy tests coil in shifting planes. They favour shallow, warm, often restricted or hypersaline lagoons, so their presence is a useful indicator of the environment a rock formed in.

A broad fossil group rather than a single taxon — the units below record it among their fauna or flora.