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Paleontologists from Yunnan University, Leicester University, and the Natural History Museum in London have conducted a microtomography study on a new specimen of early Cambrian arthropod, called Kylinxia zhangi. Kylinxia zhangi swam in the early Cambrian sea, approximately 518 million years ago.
First described in 2020, this ancient arthropod has a length of about 5 cm (2 inches) and a width of about 1.2 cm (0.5 inches). Kylinxia zhangi is part of the Chengjiang biota in Yunnan Province, China, where more than 250 species of exceptionally preserved fossil organisms are found.
"Seukuran udang besar, ciri-cirinya yang mengejutkan termasuk tiga mata di kepala dan sepasang anggota tubuh menakutkan yang mungkin digunakan untuk menangkap mangsa.“Kylinxia zhangi occupies an important position in the evolution of arthropods, branching from the stem lineage of euarthropods between radiodonts (Anomalocaris and its relatives) and 'large complement' arthropods," said Ph.D. student Robert O'Flynn and his colleague."
Source: Sci. News
"Expressing Research on the Anthropod Animal\u00a0."
Professor Yu Liu from Yunnan University emphasizes that they are testing micro-CT data to improve previous interpretations of the head structure of the genus Kylinxia. Surprising results show that the head of Kylinxia consists of six segments, similar to the structure in insects.
According to Dr. Greg Edgecombe, a paleontologist from Yunnan University and the Natural History Museum in London, most of the theories on the evolution of arthropod heads are based on early branching species with fewer segments. However, the discovery of two previously undetected pairs of legs in Kylinxia zhangi revealed that living arthropods have inherited a six-segmented head from their ancestors at least 518 million years ago.
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