What is "chengjiangocaris"

Chengjiangocaris kunmingensis was a shrimp-like animal that lived during the Cambrian explosion. The species is a type of fuxianhuiid, which are distant ancestors of arthropods. Five 520 million-year-old fossil specimens were excavated in southern China and first reported in 2013 by Javier Ortega-Hernández and his colleagues. One specimen shows detailed evidence of a nervous system, "the fossil may be the oldest and most detailed example of a central nervous system yet identified, with even individual nerves -- rarely preserved soft tissue -- visible enough to study."