Anguingosaurus brevicephalus Anqingosaurus brevicephalus is an extinct lizard from the early Middle Paleocene of Anhui, China.

[1] A. brevicephalus was originally described as a chameleon, but, not all authorities agree with this.

[2] If A. brevicephalus is a chameleon, then Chamaeleonidae fossil record extends all the way into the Paleocene.

[citation needed] If it is not, then Chamaeleonidae fossil record starts in the Early Miocene with Chamaeleo caroliquarti.

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