The ancient trumpet organs reveal individual hiking and sharp abilities in the prehistoric seas

Burgess Shell Fossils in British Columbia is known for the extraordinary protection of soft tissues, including organs and courage. Although the fossil records have a tuberbidity, thanks to their strict ecstalton, their soft organs are rarely considered safe and bad. However, especially lacking and well -protected Burgess Shell Troybite, Olinoids serms, provides a unique opportunity to study these supplements.

In a new research published in BMC BiologyResearchers, led by Post Documentary Fellow Sarah Loso in Harvard, Department of Biology and Evolutionary Biology (AEB), analyzed 156 organs from 28 O. Serritis fossil samples for the precise movement and reorganization of these ancient arterous appendages.

“It is difficult to understand the behavior and movements of Jawam, Luso said, because you can’t observe this activity like living animals.” “Instead, we had to rely on more and more samples to rely on the caution of morphology, as well as to understand how these ancient animals live.”

Artrophys have folded legs containing multiple classes that can reach the upside (extension) or downward (flakes). The limit of motion depends on how far each joint can reach in any direction. This limit, with the leg and shape of each class, determines how the animal uses the organs to walk, catch and provoke.

Horseshow shrimp, comparing the common arthropids along the east coast of North America, is often compared to triobosts, though they have no deep connection. Horseshow crabs belong to a different branch of the arterous tree, which is more closely related to spiders and scorpions, while the family relationships of tribitis are uncertain. The comparison is due to the similarities in which both animals patrol the sea floor on the legs. However, the results showed less similarity between the two animals.

Unlike the horseshow crabs, the joints of whose organs are alternatives to their specialization and extension. It is a pattern that facilitates both feeding and protection. Cerats showed the design of an easy, but highly functional organs.

“We have found that the organs of the sects have a slight extension and only in the part of the body away from the body.” Although their organs were not used at all, such as horses’ groove shrimp, lynoids can run, flare up, eat to his mouth, and even raise his body above the sea floor.

To revive its results, the team developed a sophisticated 3D digital model based on hundreds of foolish images stored at different angles. Because the organs of the fossil triabite are usually flat squash, so re -forming them in three dimensions is a challenge.

Senior author Professor Professor Jevir and Tigiga Harnandiz also said in the OEB, “We rely on unusually secure samples, compared the protection of the organs in many angles and filled the missing details using relevant gash.”

The team compared the trace fossil form with the movement of organs.

“Olenoids can produce different depths of trace foes using different movements,” Laso explained. “They can lift their body above the sesame to walk on obstacles or move in more effectively in high speed water.”

Surprisingly, the researchers discovered that male species were also used for blending in the species, and that each leg was used to breathe.

While more than 22,000 species have been described as tribites, but less than 0.2 % show any clues to legs. Nevertheless, lack of protection does not mean that these ancient arthropids are not equipped – but, their soft organs only escape the process of geometry. The rare conditions of the Burgess Shell – a sharp burial by cutting the oxygen from underwater – was the key to capturing such biological details.

More than half a billion years before this study, a rare window of a more dynamic image of life has been provided, as tribites such as olnoids were slippery across the seafarers that could explode in the oceans, and reveal how they survived, but also survived.