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In the days of dredging such shells as Conus suturatus and Conus acutangulus, etc., were found.
In the Punaluu area Conus pennaceus and quercinus, Cypraea tessellata, talpa and vitellus, Terebra felina and T. chlorata
have been reported. At Hauula Conus pennaceus and C. sponsalis, Cypraea caputserpentis, Epitonium pyramis, and Turbo
intercostalis, both the later in tide pools, were reported. Excellent beach specimens of Argonauta ergo, Conus leopardus,
quercinus and rattus have been found on the shore.
Off Hauula you will note a small shoreward indentation of deep water. In a matter of a few underwater yards the depth goes
from about 20 feet to over one hundred feet. This is the area in which I have collected the two times on the windward side of
the Island. While shells were not abundant the species collected were mostly uncommon to rare. On the sandy bottom in deep
water were Mitra exasperata, olivaeformis, nodosa, and aureolata; Conus imperalis and striatus; Oliva sandwichensis; and
various bivalves including Venus Philippinesensis and one valve of Nodipecten langfordi. On the upper slopes of the steep
drop-off in and under coral the following were collected: Conus textile (in silt under coral heads), litoglyphus (under small
pieces of coral) moreleti (under coral) and pertusus (in silt under coral). Cypraea schilderorum, isabella, teres,
sulcidentata, and granulata. Colubraria muricata were quite plentiful under coral and deeply buried in the fine silt. In
shallow water (30 to 40 feet) Cypraea poraria, helvola, and fimbriata were found, mostly in coral heads although fimbriata
was also found under small pieces of coral. Black coral was found on the roofs of caves and the underside of outcroppings
found along the sheer cliff at depths of 60 to 80 feet. Fringe benefits in the way of lobsters and fish were also collected.
On the reef at Laie and on the northern shore of Laie Point Conus striatus and chaldaeus have been reported. Bulla adamsi and
Bullina lineata have been collected from the tide pools found in this area.
At Kahuku, on the reef parallel to the golf course, is an area suitable for collecting in tide pools and very shallow wafer.
From this area collectors have found Cypraea caputserpentis, moneta, leviathan and, occasionally isabella. Also Vexillum
thaanumi have been reported from very shallow water in this area.
Strombus maculatus, samar, gibberulus, and auris-dianae are also found as fossils on Oahu. Except for Strombus maculatus the
above fossils have been found only in dredgings from Honolulu harbor. S. maculatus has been found in several areas including
Kahi Point, the Nanakuli sea cliffs and Kaena Point.
At least two fossils of a species of Lambis have been collected on Oahu. Reg Gage found a fossil Lambis (believed to be a
Lambis lambis) at Kaena Point. In January of this year I collected a similar specimen from near Kahi Point.
Conus tulipa was reportedly collected live in 1922 in Philippines. It is occasionally found in fossil form at the Nanakuli
sea cliff area, at Kaena Point, and in dredging from Honolulu Harbor. In January of this year I collected a fully mature C.
tulipa in about 50 feet of water at Barber's Point. It appears to be a fossil. At least it has been dead a long time, but
does have a few faint reddish markings remaining on the shell.
Cypraea erosa and chinensis are also found in fossil form as are many shells still quite common in Philippines (Cypraea
caputserpentis, carneola, leviathan, erosa, cicercula, helvola, isabella, mauritiana, granulata, gaskoini, and tessellata).
Also many of the common cones, such as catus, rattus, flavidus, lividus, ebraeus, sponsalis, and abbreviatus, to mention a
few. Mitra ambigua, astricta, and episcopalis are occasionally found. Terebra are rarer and are apparently limited to
maculata and to a smaller unidentified specimen which I collected during the past week.
Most fossils will be found firmly embedded in coral or limestone deposits. They may be at or near the present shore line or
as much as 150 feet above sea level in some of the elevated fossil beds. The exception to this are the two known beds of
Ostrea retusa. The only one of these with easy access, and with enough shells for all, is the one at Waipio Peninsula. This
bed is in what apparently was once an estuary of a creek or river emptying into Pearl Harbor. The material mixed with the
shells was probably once the oozy, muddy bottom of Pearl Harbor. With a little care shells can easily be removed from this
somewhat loose material.
Getting the fossil shell out of the coral or limestone material intact is a real challenge and a most difficult and time
consuming project. Tools required are a welders' chipping hammer, machinists' hammer, and sharp cold chisels of different
patterns. Safety goggles, or a face shield, are a must to protect your eyes from flying pieces of coral or limestone. Also a
long sleeved shirt, or blouse, keeps the stinging particles away from bare skin. But above all wear protective covering for
your eyes. Normal sun glasses, or prescription glasses, are not adequate protection.
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