Marine bivalves

Hiatella rugosa. Periostracum covers siphons, and much survives on valves; difficult to explain if boring action into solid limestone is by mechanical movement of valves unaided by chemical or muscular action of foot.
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of left valve
Outside of left valve
Outside of left valve
Outside of left valve
Outside of left valve
nivea  Sconser population
Outside of left valve
Outside of left valve
Outside of left valve
Outside of left valve
Tellimya ferunginosa associated with a living Echinocardium cordatum
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
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Outside of right valve
Outside of left valve
Outside of left valve
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Outside of right valve
Outside of right valve
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Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Exterior and interior of left valve annotated to show pallial sinus and muscle scars
Exterior and interior of left valve annotated to show pallial sinus and muscle scars
Exterior and interior of left valve annotated to show pallial sinus and muscle scars
Exterior and interior of left valve annotated to show pallial sinus and muscle scars
Exterior and interior of left valve annotated to show pallial sinus and muscle scars
Exterior and interior of left valve annotated to show pallial sinus and muscle scars
Exterior and interior of left valve annotated to show pallial sinus and muscle scars
Exterior and interior of left valve annotated to show pallial sinus and muscle scars
Exterior and interior of left valve annotated to show pallial sinus and muscle scars
View of right valve of Angulus squalidus.
Left valve of Angulus tenuis showing colour variation
Right valve of Arcopagia crassa
Left valve of Arcopella balaustina
Right valve of Fabulina fabula
Right valve of Moerella donacina
Moerella pygmaea
Left valve of Macoma balthica
Left valve of Gastrana fragilis
Left valve of Donax variegatus
Right valve of Donax vittatus
Abra alba
Left valve of Scrobicularia plana
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Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
View of outside of right valve
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Outside of right valve
H. arctica. 5mm long juvenile. Silky white shell, fine concentric ridges. Trapezoidal outline. 2 ribs with uneroded spines radiate from beak to posterior. Foot tip extended at narrow rounded anterior. Siphon tips protruded from broad subtruncate posterior
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve
Outside of right valve