PaleoPebbles 2
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Scale is 1mm per tick mark

FP007 Shell cast. A piece of an interior cast of a mollusk with a spiral shell. Note: a "cast" is made when a space is filled with sand or mud and it hardens to make a 3-D copy of the filled space. A "mold" is made when an object is pressed into soft mud and leaves an impression.

FP008 Barracuda tooth.

FP009 Rear Drum Fish Tooth The picture on the left is the outer surface; on the right is the "root". The bright dot near the center of the picture on the left is a reflection off a raised bump. Drum fish jaws have teeth laid out like cobblestones, which they use to grind their food. The teeth in the rear of the jaw are smaller and sometimes have a small bump in the center.

FP010 Shark tooth. I am going to say it is a lemon shark (Negaprion brevirostris), but I am open to criticism.