SciTechDaily has a story about arthropod origins.  Researchers from the Nanjing Institute of Geology and Palaeontology of the Chinese Academy of Sciences (NIGPAS) have revealed a new shrimp-like fossil with five eyes.  The animal, called Kylinxia, lived about 520 million years ago in what is now China’s Yunnan Province.  The paper describing this discovery appeared in 4 November 2020 issue of the journal Nature.

The fossil species, Kylinxia, was collected from the Chengjiang fauna in southwest China’s Yunnan Province. The fauna documents the most complete early animal fossils in the Cambrian time.

Prof. HUANG Diying, corresponding author for the study from NIGPAS, said, “Kylinxia is a very rare chimeric species. It combines morphological features from different animals, which is analogous to ‘kylin,’ a chimeric creature in traditional Chinese mythology.”

“Owing to very special taphonomic conditions, the Kylinxia fossils exhibit exquisite anatomical structures. For example, nervous tissue, eyes and digestive system — these are soft body parts we usually cannot see in conventional fossils,” said Prof. ZHAO Fangchen, co-corresponding author of the study.

Kylinxia shows distinctive features of true arthropods, such as a hardened cuticle, a segmented trunk and jointed legs. However, it also integrates the morphological characteristics present in very ancestral forms, including the bizarre five eyes of Opabinia, known as the Cambrian “weird wonder,” as well as the iconic raptorial appendages of Anomalocaris, the giant apex predator in the Cambrian ocean.