Xenodontolacerta

Xenodontolacerta
Temporal range: Late Cretaceous,
Holotype skull, CVEB20180206
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Clade: Polyglyphanodontia
Genus: Xenodontolacerta
Jiang et al., 2026
Species:
X. fangi
Binomial name
Xenodontolacerta fangi
Jiang et al., 2026

Xenodontolacerta (meaning "lizard with strange teeth") is an extinct genus of polyglyphanodontian lizard from the Late Cretaceous (ConiacianCampanian ages) Hekou Formation of China. The genus contains a single species, Xenodontolacerta fangi, known from a partial skull and mandible. Its teeth are uniquely heterodont, more similar to polyglyphanodontians from North America than those in Asia. This unique tooth morphology suggests Xenodontolacerta was likely omnivorous, contrasting with its herbivorous contemporaries.