(Müller, 1776)

Description:
Shell oval in outline; to about 30 mm long. Some of the largest specimens have a truncated anterior. The external surfaces are smooth, save for concentric growth lines. The shell is endopunctate, white, yellowish or grey in colour. Pedicle foramen with small deltidial plates that do not join in the midline.
Internal:
Long loop, reflected ventrally; no median septum. Lophophore with long lateral lobes and a median spiral (M. cranium internal).

Habitat:
Sublittoral, from shallow water to 1262 metres.

Distribution:
It has been found around the Shetlands, Orkneys, along the western coasts, Western Approaches; Arctic to Mediterranean.

Kingdom Animalia
Phylum Brachiopoda
Class Articulata
Order Terebratulida
Suborder Terebratellidina
Superfamily Terebratellacea
Family Dallinidae
Genus Macandrevia
Species Macandrevia cranium

Status in World Register of Marine Species

Accepted name: Macandrevia cranium (O. F. Müller, 1776)

Scientific synonyms and common names

Terebratula cranium Müller, 1776
Waldheima (Macandrevia) cranium: Davidson, 1886
Magellania (Macandrevia) cranium: Fischer and Oehlert, 1891

Brunton, C.H.C. and G.B. Curry, 1979. British Brachiopods. Synopses of the British Fauna (NS), 17, 64 pp.

Davidson, T., 1886-1888. A Monograph of Recent Brachiopoda. Trans. Linn. Soc. Ser. 2, 4, pts. I-III.

Ryland, J.S., 1990. The lophophorate phyla Phoronida, Bryozoa, and Brachiopoda. In: P.J. Hayward & J.S. Ryland (eds), The Marine Fauna of the British Isles and North-West Europe. Vol. 2, Molluscs to Chordates. Clarendon Press, Oxford, 628-996.

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