I have the newer 3 volume (plus CD) volume but not the
original Millard.  From what I remember of the introduction,
in addition to updates, the new edition has the substantial
expansion of an effort to include fossil taxa.  There is also
more effort at revising rather than simply updating Vaught.
For the bivalves, you would probably come close to the
same result if you integrated Vaught, the Treatise on
Invertebrate Paleontology, and the Vokes compendia of
bivalve genera, although there are many additional papers
used as well.  I spotted a few peculiarities so far in the
course of trying to look up particular taxa.  For example,
Chesapeakella was noted as a replaced junior homonym,
but the senior homonym, also a mollusk, was not listed.

    Dr. David Campbell
    Old Seashells
    46860 Hilton Dr #1113
    Lexington Park MD 20653 USA
    [log in to unmask]

That is Uncle Joe, taken in the masonic regalia of a Grand
Exalted Periwinkle of the Mystic Order of Whelks-P.G.
Wodehouse, Romance at Droigate Spa





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