New Lepidosauromorpha 2
- Macroleter and Lanthanosuchus are sister taxa.
- Nyctiphruretus, Sauropareion and owenettids are not procolophonids. They are pre-lepidosauriformes.
- Coletta is not a procolophonid, but a basal lepidosauriform.
- Saurosternon and Palaegama are basal to the erroneously-called ‘rib’ gliders.
- Coelurosauravus and Mecistotrachelos are sisters to the kuehneosaurids with homologous dermal structures (not ribs).
- Xianglong is a late surviving sister to the kuehneosaurids, not related to Draco, the living rib glider, which does indeed glide with its ribs, distinct from the others.
- Basal lepidosaurs split between sphenodontids and tritosaurs + pre-squamates.
- Basal sphenodontids include Megachirella, Pleurosaurus and Marmoretta.
- Derived sphenodontids include Azendohsaurus, Trilophosaurus, rhynchosaurs and their kin with several taxa, like Eohyosaurus as transitional taxa.
- Tritosauria is an overlooked clade of lepidosaurs. It contains Huehuecuetzpalli, Tijubina, Macrocnemus, Langobardisaurus, Tanystropheus and the fenestrasaurs, Cosesaurus, Sharovipteryx, Longisquama and pterosaurs.
- Lacertulus, Hoyalacerta and others are proto-squamates, nesting outside of the Squamata.
- Scandensia, Calanguban and Euposaurus are basal squamates.
- Geckos are the sister group to the clade that produced snakes.
- Ardeosaurus is a basal member of that proto-snake/snake clade that has aquatic members, like Pontosaurus, not related to mosasaurs.
- Burrowing snakes, like Leptotyphlops, are derived, not basal snakes.
- Amphisbaenids and Dibamus are derived skinks.
- Jesairosaurus and the drepanosaurs nest with kuehneosaurs as basal lepidosauriforms.
More later. Celebrating four years online this month.