You searched for: “pseudoarcheology
pseudo-archaeology, pseudoarchaeology, pseudoarcheology (s) (noun) (no pl)
The use of selective archeological evidence, real or imagined, to promulgate nonscientific, fictional accounts of the past: The methods used by pseudoarchaeology include exaggeration of evidence, romanticised conclusions, the employment of fallacy, and fictionalised evidence.

Other known terms for pseudoarchaeology are alternative archaeology, fantastic archaeology, and spooky archaeology.