FIGURE 10. Turneroconcha magnifica n in A new genus Turneroconcha (Bivalvia: Vesicomyidae: Pliocardiinae) for the giant hydrothermal vent clam 'Calyptogena' magnifica

FIGURE 10. Turneroconcha magnifica n. comb. (Boss & Turner, 1980) in its natural habitat, Gulf of California, Alarcón Rise, 2309 m, RV Western Flyer, dive D754. A, usual epifaunal position of T. magnifica on bare basalts along crevices. B, unusual infaunal behaviour of T. magnifica in soft sediment. C, specimen with a protruding foot. D, temperature measurement in vicinity of an exhalant siphon of T. magnifica. Distance between red dots is 25 cm. Photo courtesy of MBARI with permission of R.C. Vrijenhoek.