Polycotylid plesiosaur characterized by premaxillae with swollen lateral processes between the external nares and the frontal foramina; orbits regularly oval without supraorbital processes; dental formula consisting of five premaxillary, at least 22 maxillary and 29 dentary teeth; mandibular symphysis bearing 15 teeth; 30 neck vertebrae; cervical centra nearly as long as high, bearing lateral longitudinal ridges which are paired from the 19th to 22th cervical vertebra.

The species name alludes to the long neck.