The Proper Name for the Geoduck: Resurrection of Panopea Generosa Gould , 1850, from the Synonymy of Panopea abrupta (Conrad, 1849) (Bivalvia: Myoida: Hiatellidae)
2010; Umeå University; Volume: 52; Issue: 1 Linguagem: Inglês
10.4002/040.052.0111
ISSN2168-9075
AutoresBrent Vadopalas, Theodore W. Pietsch, Carolyn S. Friedman,
Tópico(s)Aquatic Invertebrate Ecology and Behavior
ResumoIn 1849, Conrad described, illustrated, and assigned the name Mya abrupta to a new species of fossil bivalve collected from Miocene deposits along the banks of the Columbia River near Astoria, Oregon, during the United States Exploring Expedition of 1838–1842 (Conrad, 1849: 723, pl. 17, fig. 5a, b, USNM 3608; Figs. 1–3). Conrad described it as: “Subelliptical, slightly ventricose, widely gaping posteriorly. Surface marked with concentric undulations. Beaks separated, nearly medial, slightly prominent. Anterior margin acute, orbiculate; posterior margin abrupt, arcuate, somewhat reflexed; basal (inferior) margin arcuate; dorsal margin short, straight, nearly parallel with the base.” In 1850, Gould described the valves of a new extant species collected from the Nisqually region of Puget Sound, Washington, during the same expedition and assigned it the name Panopea generosa (Gould, 1850: 215, USNM 5894; Figs. 4–7). Gould (1852: 385–386; 1860, pl. 34, fig. 507, 507a) later figured and expanded the description: “Shell large and ponderous, chalky white, of a somewhat quadrilateral form, the basal and hinge margins being nearly parallel; the posterior extremity broadly truncated a very little obliquely, and the anterior extremity broadly rounded; anteriorly it gapes slightly, but posteriorly it gapes broadly, and the valves are here somewhat everted. The surface is coarsely undulated concentrically, and covered by an obliquely, and somewhat plumosely wrinkled, dirty yellow epidermis. The beaks are sharp and prominent, placed near the middle of the superior margin; the anterior umbonal slope is tumid, the posterior a little compressed. The hinge is rather slender, having a single elevated, erect, obliquely triangular tooth in each MALACOLOGIA, 2010, 52(1): 169−173
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