When Chen Shangbin, director of the Geology Department of China University of Mining and Technology, was on a business trip, he found fossil debris on the toilet of Guiyang Airport and photographed it in the circle of friends. Dr. Qian Maiping, a stratigraphic paleontologist and a classmate of minecraft, identified as a fossil shell shell more than 400 million years ago:
Re-authentication
Pentamerida
Five-room shellfish
Virgianidae
Branch bezko
Paraconchidium
Genus Apocrypha
Paraconchidium shiqianensis Rong, Xu, and Yang, 1974
Shi Gang Proposed Housing Shell Shell Rong Jiayu et al., 1974
Origin Level:
Upper Xiangshuyuan Formation (middle to upper Aeronian), Shiqian, Meitan and Zunyi areas， northeastern Guizhou Province, China
Upper part of the Xiangshuyuan Formation in the area of Shiyan-Meitan-Zunyi in northeast Qiandong (middle-upper Elon Steps)
era:
Mid-Late Aeronian (Llandovery, Early Silurian), ca. 439 Ma
The Middle-Late Elon period (early Silurian, Lando Ferrife) was about 439 million years ago
The fossils in the toilet are behind an ancient storm
There is nothing to say about the value, talk about the cause of death.
You may notice that they are unusually scattered, all of them look broken, and they have withstood the ravages of the storm.
Back more than 400 million years ago, Qianbei is located around 20 south latitude, which is a warm shallow sea and an ocean hurricane-prone area
Under normal weather, the remains of dead marine organisms will be carried and deposited by waves, and will be stacked together for a long time with calcium carbonate; However, there are always bad weather, sudden storm waves, will roll up shallow sea sediments, and move back to the far side, even the coast, after deposition, the formation of storm sediments.
The fossil in the toilet at Guiyang Airport is a corner of the storm sediment
When the storm comes, both the living shellfish and the shellfish that have long been dead and have only empty shells will be destroyed: countless empty shells are set off to collide and break apart, and the living shellfish die one by one, one after another into fragmented empty shells.
Finally, entering the storm decay period, it is interesting to come
As storms churn sediments so much that they cause differential suspension. When the storm weakens, the sediment is deposited sequentially in order of particle size, with coarse detritus at the bottom and tends to thin upwards. As a result, the thick pile of shell fragments, along with other coarse-grained sediments, formed a dense shell layer on the seabed, also known as the "corpse group".