Species Account

Protocuspidaria atlantica Allen & Morgan, 1981

Verticordioidea : Cuspidariidae

Tebble name: n/a
Smith & Heppell name: Protocuspidaria atlantica Allen & Morgan, 1981

To size: To 8mm. Shell Structure: Thin, fragile. Equivalve: Equivalve. Equilateral: Subequilateral, close to or slightly behind the midline. Outline: Body of shell deep, subcircular; anterior and ventral forming a broad continuous curve. Rostrum very short less than length of body, broad, dorsal margin concave, ventral margin slightly concave corresponding to sulcus at junction of rostrum and body.

Sculpture: Of co-marginal raised threads and lines becoming slightly lamellose on rostrum. Margin: Inner margin smooth. Ligament: Ligament internal, small, in a shallow resilifer behind the beaks. Hinge: With a single, weak, anterior laminar tooth in both valves. Pallial Musculature: Obscure. Periostracum: Thin, pale brown in colour. Colour: Shell white.

Distribution & Ecology

Members of the genus Protocuspidaria are known from lower bathyal and abyssal depths including Rockall, Porcupine Sea Bight and Biscay.

Depth Range
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)

Additional Information & Related Species


Listed are literature citing Protocuspidaria atlantica Allen & Morgan, 1981. Reference containing the species Type Description is highlighted.

Allen J A & Morgan R E 1981. The functional morphology of Atlantic deep water species of the families Cuspidariidae and Poromyidae (Bivalvia): an analysis of the evolution of the septibranch condition. Philosophical Transactions of the Royal Society of London Series B. 294: 413-546.


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Record last modified: 22/03/2016