Calcified taxa in the collections

The following calcified organisms feature within historical marine collections surveyed at the Natural History Museum and other British institutions.

  • Coralline alga lining an upper shore rock pool

    Coralline algae contain calcareous deposits within their cell walls. Discover where to find coralline algae specimens.

  • Recent specimen of the brachiopod Lingula, with long pedicle emerging from the shell
    Brachiopods (Brachiopoda)

    Find out which historical marine collections contain brachiopods - a small phylum of benthic invertebrates with a large fossil record.

  • Scanning electron microscope image of a bryozoan colony
    Bryozoans (Bryozoa)

    These colonial organisms make hard skeletons of calcium carbonate. Learn which collections contain bryozoan specimens.

  • The holotype of the coral Montigyra kenti Matthai, 1928
    Cnidarians (Cnidaria)

    Various cnidarians - including corals, gorgonians and hydroids - are represented in relevant collections. Find out more.

  • Ophiuroid brittle star specimens housed at the Natural History Museum
    Echinoderms (Echinodermata)

    Echinoderm specimens can be found in multiple surveyed collections. Learn which.

  • Benthic foraminifera
    Forams (Foraminifera)

    Forams are single-celled organisms, usually less than 1mm in size. They are represented in many historical marine collections, both at the Natural History Museum and at other institutions. Find out more.

  • A brown paper nautilus, Argonauta hians
    Molluscs (Mollusca)

    Molluscs are well-represented in the historical marine collections from various different institutions. Learn where to locate specimens.

  • Ostracods
    Ostracods (Ostracoda)

    Ostracods are represented in a number of relevant collections. Discover which.

  • 'Calcispongiae' from Ernst Haeckel's Kunstformen der Natur, 1904
    Sponges (Porifera)

    Find out which surveyed collections contain calcareous sponge specimens.