Characters: Colonies are submassive or laminar, up to 1.5 metres across. Valleys are 3-4 millimetres wide, usually perpendicular to colony margins, becoming sinuous towards the colony centre. Septa are irregular, with strong teeth. Columellae do not form centres and are not laminar.
Colour: Pale blue-grey to translucent white.
Similar species: Leptoria phrygia. See also the merulinids Scapophyllia cylindrica and Merulina ampliata.
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