Reference
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Title: |
Report on Referred Fossils
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1972
(01/24)
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Report by: |
Warren O. Addicott
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Referred by: |
L. M. Gard
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| Age: | Late Pleistocene-Holocene (Late Pleistocene or Holocene) |
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Comment: | This poorly preserved assemblage is suggestive of a Pleistocene or Holocene age. So far as I can determine, Macoma nasuta has never been recorded from Hopkins’ (1967) Pleistocene Transgressions (neither it, nor M. inquinata, are recorded from the South Bight locality – USGS loc. M4098 and Allison (in press)) and is restricted today to areas east and southeast of the Aleutian Chain. It would seem, therefore, to suggest a very young age, possibly every late Pleistocene or Holocene. The other doubtfully identified species, M. inquinata, is a circum-North Pacific bivalve and ranges northward into the Bering Sea. This association of Macomas is suggestive of very shallow water conditions – intertidal or upper reaches of the inner sublittoral zone (= neritic zone). Assemblages such as this in which Macomas are the dominant element are often indicative of shallow water bays or marine estuaries. |
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