Short one today
because all the work is not yet done with regard to ray fin fish phylogeny. This is just an update.
Previously I overlooked this novel hypothesis of interrelationships.
Now it seems obvious (Fig. 1). But first I had to better understand the crushed skulls of Xiphactinus (Figs. 1, 3) and Portheus (a traditionally junior synonym for Xipactinus, here resurrected due to several differences in the skull and post-crania, Figs. 2,4). Lots of little nips and tucks here.
At present these three taxa
share a last common ancestor with an ancestor to Serrasalmus, the piranha.