Trilobite fossils, swallow stones, also called bat stones, scientific name trilobite fossils. Trilobites (TRILONITES), a paleozoic arthropod of the trilobite, were born on the seafloor, with a wide variety of species and sizes, ranging from one centimeter to one meter, born in the Cambrian (570 million years), peaked in the Ordovician (450 million years), and became extinct at the end of the Permian (252 million years ago, 252 Ma). More than 2,500 species of animal fossils have been found in the Cambrian period of the early Paleozoic era, and almost all phyla except for vertebrates are found. The largest of these is the trilobite, which accounts for about 60% of the total number of fossils preserved.
Chinese trilobite fossils are one of the important fossils of the Early Paleozoic Era and an important basis for dividing and comparing Cambrian strata. The main fossil species of trilobites are: Bat worm (Drepanura), Sichuan worm (Szechuanella), Parasxechuanella, ctenophora (i.e. Xiangxi worm), crown worm (Coronocephalus), communication worm (Ductina)
It is understood that in Maoba Village, Maoba Township, Youyang Tujia and Miao Autonomous County, Chongqing Municipality, a peculiar thing was found in the local area, with an unknown paleontology outline of about 70 centimeters in length and about 3 centimeters in width. The person in charge of the county's cultural relics management office led a team to inspect the site, and under the identification of the technicians, the final conclusion was reached that this fossil was a "trilobite fossil".
The picture shows the fossil trilobite
Although some of the trilobite fossils are damaged, they do not affect their scientific research value. "The conservation of trilobite fossils is protected by law like other cultural relics, and we will send experts from the Museum of Nature to the site to take samples and take them back for in-depth study." The head of the county's cultural relics management office said.
Trilobites are the most representative ancient animals that appeared in the Cambrian Period 560 million years ago, developed to a peak 500 million to 430 million years ago, and completely became extinct in the Permian 240 million years ago, and survived on the earth for more than 320 million years before and after, which shows that this is a class of extremely vigorous organisms. Over the course of time, they evolved into a wide variety of species, some up to 70 centimeters long, some only 2 millimeters long. The dorsal carapace is divided into two dorsal grooves longitudinally divided into an axis leaf and two rib lobes, hence the name trilobite.
A 450 million-year-old "trilobite" fossil, on which there are more than 50 trilobites embedded, this fossil yesterday in Zhenjiang Gongjikang old man's home "appeared", the viewers are all amazed. There are more than 50 "trilobites" embedded in the fossil plate, and the body and wings of the insects are clearly visible. According to a geological expert from the Provincial Institute of Geology, the "trilobite" belongs to the sea wandering and floating animals, began to appear in the Early Cambrian, the end of the Paleozoic dynasty all extinct, its fossils are the main criteria for dividing geological eras, may be seen in geological museums, but for personal collection is rare, especially such a large "trilobite" fossils, rare in China.
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