ABSTRACT A nearly complete skeleton of an erycine boid is described from the Ypresian-
Lutetian (early-middle Eocene) site of Messel, Germany, for which we propose the name …

The evolution and interrelationships of carnivorous squamates (mosasaurs, snakes, monitor
lizards, Gila Monsters) are a contentious part of reptile systematics and go to the heart of …

Aim Little is known about the contributions of individual clades to the broader latitudinal
diversity gradients of lizards and snakes in North America. Additionally, the environmental …

Abstract “Anilioidea” is a likely paraphyletic assemblage of pipe snakes that includes extant
Aniliidae from equatorial South America, Uropeltoidea from South and Southeast Asia, and …

Interpreting the impact of climate change on vertebrates in the fossil record can be
complicated by the effects of potential biotic drivers on morphological patterns observed in …

The fossil history of worm lizards in Eastern Europe is very patchy because of the small
number of localities and the fragmentary vertebral material available. A new record of the …

Background There are limited data on intra-and interspecific osteological variation for many
squamate clades. Those data are relevant for phylogenetic analyses that use osteological …

Molecular divergence dating has the potential to overcome the incompleteness of the fossil
record in inferring when cladogenetic events (splits, divergences) happened, but needs to …

Terrestrial ecosystems in North America changed substantially during the Neogene.
Previous authors have documented changes in plants and mammals but squamates have …

Abstract Background Alligator lizards (Gerrhonotinae) are a well-known group of extant
North American lizard. Although many fossils were previously referred to Gerrhonotinae …