Bobosaurus forojuliensis (Dalla Vecchia 2006; Fabbri, Dalla Vecchia and Cau 2014; Dalla Vecchia 2016/2017; Late Triassic, Early Carnian; MFSN 27285; Figs. 1, 2) is a large eusauropterygian originally considered close to Pistosaurus and among pistosaurians, closer to plesiosaurians. It was originally assumed to have large flippers despite lacking large flipper elements.
in the large reptile tree (LRT, 1430 taxa), high–spined Bobosaurus nests as a 3x larger sister to Corosaurus with small hands and feet, not flippers. The pectoral elements were overlooked or considered ribs. Corosaurus was among the taxa tested in Fabri, Dalla Vecchia and Cau 2014. Not sure yet how the topologies differed, but they nested turtles between Claudiosaurus and Lepidosauriformes (like Icarosaurus) + Ichthyopterygia, a hypothesis of relationships not confirmed by the LRT.
In a similar story,
earlier we looked at another large eusauropterygian, Sachicasaurus, that was originally considered a small-handed pliosaur, but nested in the LRT with the more primitive Nothosaurus.
Dalla Vecchia FM 2006. A new sauropterygian reptile with plesiosaurian affinity from the Late Triassic of Italy. Rivista Italiano Paleontaleontologia, Stratigraphia 112 (2): 207-25.
Dalla Vecchia FM 2016. Comments on the skeletal anatomy of the Triassic reptile Bobosaurus forojuliensis (Sauropterygia, Pistosauroidea). Gortania Geologia, Paleontolgia, Paletnologia 38:39–75.
Fabbri M, Dalla Vecchia FM and Cau A 2014. New information on Bobosaurus forojuliensis (Reptilia: Sauropterygia): implications for plesiosaurian evolution. Historical Biology 26 (5): 661-9.