Lophognathus

Lophognathus is a genus of large-bodied agamid lizards, consisting of two species — L. gilberti and L. horneri — both of which are endemic to northern Australia. Along with several other closely related genera (e.g., Amphibolurus, Gowidon, and Tropicagama), these lizards are commonly referred to as "dragons". In Australia, these lizards are also colloquially known as "Ta Ta" lizards, due to their habit of "waving" after running across hot surfaces.

Lophognathus are slender, slightly compressed, semi-arboreal lizards. They occur in a variety of habitats, including sand dunes and arid regions, but frequently near watercourses.

Taxonomy
The genus Lophognathus was originally named and described by John Edward Gray in 1842.

Species
Two species are currently recognized in this genus:
 * Lophognathus gilberti Gray, 1842 – Gilbert's lashtail, Gilbert's dragon
 * Lophognathus horneri Melville, Ritchie, Chapple, Glor & Schulte, 2018

Two species formerly included in genus Lophognathus have been reclassified, as follows:
 * Lophognathus temporalis (also known as Amphibolurus temporalis, Gemmatophora temporalis, Gowidon temporalis, Grammatophora temporalis, Physignathus temporalis, Lophognathus labialis, Lophognathus lateralis, and Lophognathus maculilabris) has been reclassified as Tropicagama temporalis
 * Lophognathus burnsi has been reclassified as Amphibolurus burnsi