“…Kelley & Pyenson, 2015;Fischer, 2016;Fischer et al, 2017Fischer et al, , 2020McCurry et al, 2017), these ratios are likely suboptimal to establish a stable taxonomy. Switching the taxonomy of Early Jurassic ichthyosaurians to apomorphy-based definitions is desirable and ongoing (Maisch & Matzke, 2000;Maisch, 2008Maisch, , 2010Martin et al, 2012;Lomax, 2016;Maxwell & Corteś, 2020;Swaby & Lomax, 2020), but still far from complete. Several Early Jurassic ichthyosaurs have been included in Temnodontosaurus over the years (McGowan, 1974(McGowan, , 1996aGodefroit, 1994;McGowan & Motani, 2003), but the monophyly of this genus has rarely been questioned (but see Maisch, 2010;Moon, 2017).…”