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Aulacopleurinae
It is a very controversial taxon and it has generated some degree of polemic
Ecology: fast-moving low-level epifaunal deposit feeder
Errachidia province
07321 - Extremely Beautiful 3.99 Inch Brazilian Agate Slice (Chalcedony Geode Section) Geological Samples AulacopleurinaeAgate is a rock consisting primarily of cryptocrystalline silica, chiefly chalcedony, alternating with microgranular quartz. It is characterized by its fineness of grain and variety of color. Although agates may be found in various kinds of host rock, they are classically associated with volcanic rocks and can be common in certain metamorphic rocks. This beautiful large polished agate slices comes from southern Brazil. The stone has been soaked in a