Panopea (bivalve)

Panopea is a genus of large marine bivalve molluscs or clams in the family Hiatellidae.^[1] There are 10 described species in Panopea.^[1] Many of them are known by the common name geoduck, from the name of the Pacific geoduck in the Lushootseed language; gʷidəq.^[2]

Panopea Temporal range: Triassic – Present PreꞒ Ꞓ O S D C P T J K Pg N
Panopea zelandica
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Adapedonta
Family:	Hiatellidae
Genus:	Panopea Ménard, 1807
Species
See text

Extant species

• Panopea abbreviata (Valenciennes, 1839) – southern geoduck
• Panopea australis (G.B. Sowerby I, 1833)
• Panopea bitruncata (Conrad, 1872)
• Panopea generosa Gould, 1850 – Pacific geoduck
• Panopea globosa Dall, 1898 – Cortes geoduck
• Panopea glycimeris (Born, 1778)
• Panopea japonica Adams, 1850 – Japanese geoduck^[3]
• Panopea smithae Powell, 1950
• Panopea zelandica Quoy & Gaimard, 1835 – deepwater clam^[4]

Extinct species

Fossil shell of Panopea intermedia

Extinct species within this genus include:^[5]

• † Panopea abrupta (Conrad, 1849) (extinct Miocene fossil)^[6]
• † Panopea depressa Martin 1859
• † Panopea dockensis Olsson and Petit 1964^[7]
• † Panopea elongata Conrad 1835
• † Panopea gastaldii Michelotti 1861
• † Panopea gurgitis Brongniart, 1822
• † Panopea intermedia Sowerby 1814
• † Panopea mackrothi Geinitz 1857
• † Panopea montignyana Martin 1859
• † Panopea orientalis Forbes 1846
• † Panopea remondii Gabb 1864
• † Panopea toulai Lundgren 1895
• † Panopea vaudini Deshayes 1857

The fossil record of the genus dates back to the Cretaceous (and maybe the Triassic) (age range: 242.0 to 0.012 million years ago). These fossils have been found all over the world.