Adapedonta is an order of bivalves belonging to the class Bivalvia. Families:

Edmondiidae

Hiatellidae

Adapedonta. Retrieved November, 05 2021, from en.wikipedia.org/wiki/Adapedonta.

Hiatellidae is a taxonomic family of saltwater clams, marine bivalve molluscs. This family is placed in the order Adapedonta.

Hiatelloidea. Retrieved November, 05 2021, from en.wikipedia.org/wiki/Hiatellidae.

The Pacific geoduck (“gooey-duck”; ; Panopea generosa) is a species of very large saltwater clam in the family Hiatellidae. The common name is derived from the Lushootseed (Nisqually) word gʷídəq.

The geoduck is native to the coastal waters of the eastern North Pacific Ocean from Alaska to Baja California. The shell of the clam ranges from 15 centimetres (6 in) to over 20 centimetres (8 in) in length, but the extremely long siphons make the clam itself much longer than this: the "neck" or siphons alone can be 1 metre (3 ft 3 in) in length. The geoduck is the largest burrowing clam in the world. It is also one of the longest-living animals of any type, with a typical lifespan of 140 years; the oldest has been recorded at 168 years old.

Panopea generosa. Retrieved November, 05 2021, from en.wikipedia.org/wiki/Geoduck.