. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure 2. Scanning electron micrographs of prodissoconchs preserved on juvenile oyster shells from (2a) Chilean oyster midden sample radio- carbon-dated to 2998-3383 years y BP (95% probability), prodissoconch length = 469 jam (UMMZ 255348); (2b) New Zealand North Island upper Nukumaruan Stage ( mya) strata, prodissoconch length = 470 /urn (NMNZ ). Both specimens display the non-umbonate. D-shaped, >425 /nm in length, flattened prodissoconch valves diagnostic for Ostrea chilensis (15). Scale bars = 150 jum.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure 2. Scanning electron micrographs of prodissoconchs preserved on juvenile oyster shells from (2a) Chilean oyster midden sample radio- carbon-dated to 2998-3383 years y BP (95% probability), prodissoconch length = 469 jam (UMMZ 255348); (2b) New Zealand North Island upper Nukumaruan Stage ( mya) strata, prodissoconch length = 470 /urn (NMNZ ). Both specimens display the non-umbonate. D-shaped, >425 /nm in length, flattened prodissoconch valves diagnostic for Ostrea chilensis (15). Scale bars = 150 jum. Sub-fossil Chilean samples of O. chilensis were obtained by M. Pino at the Raqi-Tubul estuary (37°13'30" S, 73°26' W) in December 1996. Shell samples were recovered from a midden, predominantly (70%-80%) composed of oysters (26). situated 5 m above present sea level on the west slope of "La Isla" hill. Additional sub-fossil oyster shells were recovered from adjacent salt marsh sediments ( m depth). Sub-fossil Chilean samples were subjected to radiocarbon dating analyses by Beta Analytic Inc. 4985 74 Court, Miami, Florida 33155. New Zealand fossil flat oysters with characteristic O, chilensis prodissoconchs were sampled by B. A. Marshall and M. B. Willoughby from late Pliocene horizons on the north bank of Mangahao River, km south of Mangahao, Wairarapa. North Island (map reference NZMS 260/ 462805). Prodissoconch samples were gold-coated and examined with a Hitachi S-3200N scanning electron Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woo
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
