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Geragnostus longicollis
The conservation of soft parts in the fossil record is somewhat exceptional and only occurs under certain and exclusive taphonomic conditions
Floian stage (~477 Million Years)
143915627279 L73 - Whole NWA Chondrite Meteorite Cut Into Two Halves 28
SWJ0132 - Finest Grade Clear Quartz Crystal Cluster from classical Bulgarian location Vinctifer comptoni Geragnostus longicollisThis is a gorgeous clear quartz crystal cluster that was collected from the classical Bulgarian location. Top quality cluster. Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 siliconoxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. There are many
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US$ 118.82