†Chacaicosaurus cayi Fernandez 1994 (ichthyosaur)
Full reference: M. Fernandez. 1994. A new long-snouted ichthyosaur from the Early Bajocian of Neuquen Basin (Argentina). Ameghiniana 31(3):291-297
Belongs to Chacaicosaurus according to V. Fischer et al. 2013
Sister taxa: none
Type specimen: MOZ 5803 PV, a partial skeleton (Skull and postrcranial fragments). Its type locality is Chacaico Sur-Charahuilla (icthyosaur locality), which is in a Bajocian marine horizon in Argentina.
Ecology: nektonic carnivore