''Spondylus squamosus'' is a species of ''

Spondylus ''Spondylus'' is a genus of bivalve molluscs, the only genus in the family Spondylidae and subfamily Spondylinae. They are known in English as spiny oysters or thorny oysters (although they are not, in fact, true oysters, but are related to sc ...

'', a genus of

bivalve Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class (biology), class of aquatic animal, aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed b ...

. This species is found in the Northern Pacific Ocean, resting in

tidal zone The intertidal zone or foreshore is the area above water level at low tide and underwater at high tide; in other words, it is the part of the littoral zone within the tidal range. This area can include several types of habitats with various sp ...

up to 20 m deep in the sea. They attach themselves to the basis of the sea with their right valve.

References

Spondylidae Bivalves described in 1793 {{Bivalve-stub