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The conservation of soft parts in the fossil record is somewhat exceptional and only occurs under certain and exclusive taphonomic conditions
Bonaparte 1999
Otarion filmeri
Beautiful preserved specimen
20252 - Extremely Beautiful 4.99 Inch Brazilian Agate Slice (Chalcedony Geode Section) Eucosmus The conservation of soft partsAgate 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
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