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Taxonomische classification
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(Spengler, 1793)

Description:
A large thick shell shaped like Mya truncata but with a broad furrow in the middle of each valve. One very small tooth in the right valve and two teeth in the left (P. arctica-drawing).

Size:
Up to 50 x 75 mm. Some shells may reach the length of 125 mm.

Colour:
The shell is covered by a yellow-brown periostracum.

Animal:
The siphons are protected by a thick leathery sheath, and the lower tube is larger than the upper one.

Habitat:
Deeply buried in muddy or sandy ground from intertidal zone down to 300 m.

Distribution:
A very rare, circumpolar species. In Europe from the Lofoten Islands, Iceland south to the British Isles. Reported also from the Mediterranean. (Distr. P. arctica).

Panomya arctica