Marine animal chrysanthemums have been found for the first time in amber

it is known that the amber contains an unusually rich fossil population, including 1 chrysanthemum, 4 cones, 4 cones, 23 aphids, 1 spider, 1 horse land and at least 12 insect adult specimens (cockroaches, beetles,and bees). The team included classifiers of chrysanthemum, abdominal foot and other foot, spider-shaped and insect fossils, which took two years to identify in detail. The study found that chrysanthemums, snails and one isopod belong to sea-phase organisms, and other arthropods belong to land-dwelling groups.
among them, chrysanthemums are a group of cocks and feet that live from the mud basin to the Cretaceous period, and are close relatives of nautilus, squid, etc., who disappeared from the earth at the end of the Cretaceous period. The team used high-resolution microscopic fault scanning technology (microCT) to analyze the chrysanthemum in the amber, indicating that the chrysanthemum was a larvae specimen belonging to the Puzosia subs genus. The distribution time of the chrysanthemum group was from the Cretaceous late Albi to the Senoman period (about 105 to 93 million years ago), further supporting previous isotope geological chronology studies. Two of the four snails preserved in amber belong to the Matilda genus, which is widely distributed in the Tetes Region (mainly North America and Europe).
Wang Bo, a researcher at the Nanjing Institute of Geology and Paleontological Research of the Chinese Academy of Sciences, said that both chrysanthemum and screw software in amber had been lost and the shells were damaged, indicating that the shells had undergone some handling before being wrapped in amber. Chrysanthemums are filled with fine sand particles, while amber bodies are encased in similar sand grains, suggesting that chrysanthemums may be wrapped in resin on or near the beach. As a result, the snails and chrysanthemums died before they were wrapped and were carried to shore by the waves, mixed with the remains and sand particles of some of the earth-dwelling creatures.The
team combined fossil biomes and burial analysis to infer that Burma's amber forest grew on the coast, close to the beach, that the resin was secreted, that some tree-dwelling insects were encased in tree trunks, and then that some of the chrysanthemums, screws and earth-dwelling animals were encased along the trunk, and that the resin was quickly buried and subjected to complex geological effects to form amber. (Source Science Network Shen Chunlei Chen Xiaozheng)1: Amber Specimens.2: Chrysanthemum specimens. (A) Photo of an optical microscope. (B) MicroCT stitch reconstruction diagram. (C) Micro CT side perspective. (D) MicroCT surface pattern reconstruction diagram. (E) MicroCT internal structure reconstruction diagram.3: Screw specimens.4: Geological map (A) and paleogeographic map (B) of the amber mine in Myanmar.