Some scholars, such as Michael Coe and Justin Kerr,[12] have suggested that the Madrid Codex dates to after the Spanish conquest, but the evidence overwhelmingly favors a pre-conquest date for the document. The codex likely was produced in Yucatán.[2] The language used in the document is Yucatecan, a group of Mayan languages that includes Yucatec, Itza, Lacandon, and Mopan; these languages are distributed across the Yucatán Peninsula, including Chiapas, Belize, and the Guatemalan department of Petén.[3] J. Eric Thompson was of the opinion that the Madrid Codex came from western Yucatán and dated to between 1250 and 1450 AD.