Eugene Shpinev, researcher at the State Biology Museum named after K. A. Timiryazev came to Tomsk specifically to examine the fossilized remains of ancient merostomes brought from Khakassia and Krasnoyarsk Krai. The finds are stored in the TSU Museum of Paleontology and are unique in their kind.
- I am engaged in the study of fossils of water chelicerates - eurypterids (Eurypterida), also known as merostomes, horseshoe crabs, and some smaller groups for almost a decade. The collections of TSU museums have some interesting merostomes. They are unique because they were found in atypical region: the most remnants of these animals were found in Europe and America, among other places, they are rare, - says Eugene Shpinev.
Scientists consider that merostomes are the largest arthropod ever lived on our planet - the length of the body of some specimens reaching two meters, but usually they are much smaller. Eurypterids lived on Earth since the mid of the Ordovician period (about 460 million years ago). Initially, they lived in shallow waters in the seas, which is why they are sometimes called sea scorpions. Around 300 million years ago, most of these arthropods moved to live in fresh water. The remains of the ancient animals were found in the delta and lagoon sediments that earlier were coastal areas.
- Studies of merostomes are important for understanding the evolution of arthropods and studying paleobiogeography - the process of settlement of various groups of animals. And it gives us an idea of how continents developed and communicated with each other - says Eugene Shpinev. Together with colleagues from TSU, we plan to make a number of publications on these samples, because in the scientific world is very little known about the Siberian merostomes.
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