A predatory worm over 500 million years old discovered in Greenland

Reconstruction of the pelagic ecosystem and fossil organisms of Sirius Passet reveals how worms became one of the largest predators more than 518 million years ago (Artwork by Bob Nicholls – University of Bristol)

this Ediacaran-Cambrian Transition (approximately 540 million years ago) is marked by unusually large expansion Animal diversity and diversity, consistent with exploring new areas mining strategy Deeper, more diverse, and colonized water formations.Diversity across the animal Ediacaran-Cambrian Transition is increasingly recognized as two or three step change Diversity: first and foremostworm worldLate Ediacaran”, followed by Early Cambrian (Terreneuvian) Eventually expanded significantly in diversity Cambrian.

Based on this knowledge, in journal of scientific advancement Fossils of a new group of animals have reportedly been discovered Predators of Sirius Passet Town Starting from the Early Cambrian, in the North Greenland.These large worms may be some of the the earliest carnivores It colonized water bodies more than 518 million years ago, revealing past dynasties of marauders Scientists didn’t know it existed.

New fossil has been named Timor beast, meaning “terrible beast” in Latin.Provided with Fins on the sides his body, a unique head Have long and huge tentacles jaw structure In his mouth, it grows to more than 30 centimeters long. These are some largest swimming animal of Early Cambrian.

Timorbestia koprii fossil, the largest known specimen, nearly 30 centimeters or 12 inches long (Photo: Dr. Jakob Vinther)

It was already known that primitive arthropods were the main predators of the Cambrian, such as strange-looking anomalous animals. However, Timor beasts are distant relatives, but at the same time close to a live arrowworm or chaetognath.Today, these are much smaller marine predators feed a tiny Zooplankton. Research shows that these ancient marine ecosystems were quite complex, with food chains that allowed varying degrees of predator survival.

this Timor beast yes giants of their time it will be close top of the food chain.This makes their importance comparable to some main carnivore modern oceans, such as sharks and seals, but Cambrian.inside digestive system fossils Researchers discover remains of Timorotherium Common swimming arthropods is called Isooxy,This is a food source As with many other animals.They are very common in Sirius Passet They have long protective spines that point both forward and backward. They apparently didn’t avoid this fate, however, as he chewed a lot of them.

this Arrowworm is one of them oldest animal fossil Cambrian period.Although arthropods They appear in the fossil record from 521 to 529 million years ago, with the first appearance dating back to at least 538 million years ago.

In 2017, Dr. Jakob Vinther displays the largest Timorese bestia specimen since its discovery in the town of Sirius Passet (EFE/Jakob Vinther)

These two Arrowworm like the most original Timor beast yes swimming predator.Therefore, the researchers say it is possible to hypothesize that they are likely to be dominant predator The ocean before arthropods take off.maybe they have one A dynasty that lasted about 10 to 15 million years before they are replaced by other groups.

he Timor beast Understanding their origin is a very important discovery. jawed predator. now, Arrowworm They have threatening bristles on the outside of their heads to capture prey, and Timor beast It has jaws inside its head.This is what I saw today microscopic jaw worm: Arrows shared a common ancestor with these creatures more than 500 million years ago. This fossil and similar fossils provide links between organisms that were closely related but look very different today.This finding confirms how Arrowworm evolved.

Looking at a series An expedition to the very remote Sirius Passetin the farthest north GreenlandAbove 82.5 degrees north latitude, scientists collected a wide variety of new organisms in this study.grateful Extraordinary and special protection Courtesy of the site, they can also reveal interesting anatomical details including their Digestive system, muscle anatomy and nervous system.

* Jakob Vinther is an author of the study and a researcher in the School of Earth and Biological Sciences at the University of Bristol

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