Bobosaurus as an older uncertain plesiosaur-line candidate
The early Carnian holotype combines nothosaurian and plesiosaurian features, but its position remains an alternative-sensitive hypothesis and is not used to extend diagnostic Plesiosauria.
The early Carnian Bobosaurus holotype combines nothosaurian and plesiosaurian features and was interpreted near the plesiosaur lineage, but it is an older uncertain candidate rather than diagnostic Plesiosauria; the articulated Rhaetian Rhaeticosaurus provides the older secure comparison used here.