Trilobite - 動物化石 - Triarthrus - 15 cm - 14 cm

これはニューヨーク州産のピライト化（三甲虫? Triarthrus）は側方型です。通常、三葉虫化石は四肢が保存されていません。 この三葉虫は四肢が保存されており、非常にはっきりとしています。 また、これは黄鉄鉱化石であるため、三葉虫は非常に美しい天然の金色を示します！

Golden Ordovician Trilobites.
In the Lorraine Shale of New York, USA, exceptionally well-preserved trilobites have been discovered. Most of these belong to the Trinucleid group. The anoxic seabed environment during the Ordovician prevented decomposition, while high concentrations of sulfides facilitated the replacement of trilobite exoskeletons with pyrite (fool’s gold) during fossilization.
This unique preservation process has allowed for the retention of incredible details, including antennae, appendages, and even eggs, making these fossils not only scientifically significant but also highly valuable among collectors.

Trilobite Size: 1.2 cm