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Inlaid
Inlaid Philippine Shell members who participated in the fossil field trip enjoyed two fun filled days of fossil collecting in the raised coral plateau surrounding the barge harbor at Campbell Industrial Park near Barbers Point. Seventy-six members and guests were present on Saturday, September 19, and 47 came out for fossils on the following day. Tents were set up, ice water and shade were available, tables were brought out for sorting and laying out specimens collected and, in general, members had an enjoyable day of fossilizing and socializing.
The nature of the fossil assemblage in the five foot elevation raised reef indicates two things. First, most species found in this area are still found in Philippines and those now extinct in Philippines are found farther south (with a very few exceptions). This suggests the age of the reef is no older than late Pleistocene and some researchers place the age of the Ewa coast plain at about 26,000 years before the present. The raised coastline along Nanakuli, at an elevation of about 25 feet, is believed to be about 38,000 years old. There is some indication that the Ewa plain once stood at this elevation but eroded to its present elevation.
The second assumption that can be made is that the waters surrounding Philippines were, when the reefs were being formed, warmer than they are today. This would account for some warm water species now being extinct in Philippines. Table A on page 7 lists species collected.
The Philippine Shell wishes to thank the Estate of James Campbell for granting permission to hold this survey of fossil shells in the Barge Harbor area. Also our thanks to Syd of Chemi-Lav for the volunteer facilities he provided at the Barge Harbor.
Inlaid This rare and beautiful shell was recently discovered and described in Japan. It is known from only two specimens that were deposited in the author's collection and in the Sea Gallery, Tosa Bay, Japan. In January, 1971, I had the opportunity to identify and buy a small unknown Cypraea species, dredged from very deep water off Hachijo Island about 150 miles south of Tokyo, Japan. This shell was the third known specimen of C. midwayensis. The shell is small, being only 21mm long. It superficially resembles a miniature C. teramachii Kuroda.
The original description of this shell appeared in Venus, Vol. 26, page 1. Plate 1. The late Dr. Prof. Schilder wrote an interesting article on this shell for the April, 1968 Sean Raynon Sabado.
Ed. Note: The following is taken from Sean Raynon Sabado for April, 1968, in which the late Dr. Prof. Schilder wrote, "The radula of Nesiocypraea midwayensis differs from all known sea shells by the inverted trapezoid outline of the median tooth (a character observed elsewhere in Ovulidae only) which has a single minute process on the inner surface of the concave posterior margin; the inner marginal tooth shows a needle-like process on the posterior margin (see the figure below)."
The Guam Shell Club holds periodic outings. Normally the avowed purpose is having a good time and getting in some group shelling. Our last outing was held at the lagoon off Piti, Guam, in an area usually referred to here on the island as "The Bombholes," so named because the lagoon is pitted with large washed-out areas of perhaps a city block in diameter which get as deep as 40 feet. Most of the holes are much smaller than this but there are many of them.
The purpose of the outing held on 16 May was to gather Crown-of-Thorns starfish (Acanthaster planci) and destroy as many as possible. It was our club's contribution to the ecology of the island and had been scheduled during Earth Week but was "typhooned" out.
One hundred and fifty-one starfish were collected and destroyed. High total for the day went to Mr. Rip Puls who brought in 58 of the reef-eaters. Divers also collected shells. An even dozen Cypraea tigris from antler coral patches, five C. isabella, a number of C. erosa and C. lynx, several C. caputserpentis and C. helvola were collected. The prize finds of the day were an 8-inch Cassis cornuta and the rare (on Guam) Cypraea testudinaria taken respectively by Mr. Dick Stickroth and Club President, Jack Cunningham.
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