Description: Trilobite fossils, also known as swallow stones or bat stones in ancient China, are scientifically called trilobite fossils. Trilobites are ancient arthropods belonging to the class Trilobites . They live on the seafloor. There are many species of them, ranging in size from one centimeter to one meter. They lived in the Cambrian period (570 million years ago) and reached their peak in the Ordovician period (450 million years ago). They died out in the Permian mass extinction event at the end of the Permian period (252 million years ago, 252 Ma). [1] Trilobite fossils are widely distributed in the Yimeng Mountain area, China. They have been found in Feixian County , Pingyi County and other places. However, most of them are found in exposed mountains, which are dry and difficult to preserve. They are mostly protected by paraffin . They were found in the Middle Cambrian Period of the Paleozoic Era , about 500 million years ago. The trilobite fossils here are different from those in other places. They are not complete insect fossils. Instead, only the hard part of the insect body is formed during the formation process. The head saddle of this part of the fossil is curved like a bow, and the two bow spines are twice as large as the body. The two bows are like wings and integrated into one. The body is as small as a swift, so it is named "flying stone". Stone players also call it "flying stone". More than 2,500 animal fossils have been discovered in the Cambrian period of the early Paleozoic era , including almost all phyla except vertebrates . The most common of them are trilobites, accounting for about 60% of the total number of preserved fossils.
Price: 120 USD
Location: Sarasota, Florida
End Time: 2025-01-09T20:16:55.000Z
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