(Class Ostracoda):
Well-developed ring of nerve tissue surrounding esophagus; consists anteriorly of supraesophageal ganglion, laterally of circumesophageal connective, and posteriorly of complex formed by subesophageal ganglion and more or less concentrated central nerve cord [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.