Acámbaro figures

Lore & Background

The Acámbaro figures entered the public imagination in 1944 when German merchant Waldemar Julsrud claimed to have unearthed them while riding his horse near the Cerro del Toro. He reportedly hired local farmers to excavate the site, eventually amassing a staggering collection of over 33,000 figurines. The pieces range from a few centimeters to over a meter in height and include representations of sauropods, triceratops, and other dinosaurs—creatures thought to have gone extinct long before humans appeared. Julsrud’s supporters argued that the figures proved humans coexisted with dinosaurs, challenging the established geological timeline.

Reader's Guide

The Acámbaro figures are significant primarily as a case study in archaeological controversy and pseudoscience. Despite claims by young-Earth creationists that the figurines prove dinosaurs and humans coexisted, mainstream archaeology and paleontology have rejected them as modern forgeries. The investigation by Charles C. Di Peso provided clear evidence of fakery: the figurines lacked signs of age, were placed in a recently dug hole, and were traced to a local family who had been making and selling them since 1944. Thermoluminescence dating attempts further undermined claims of antiquity: while early tests suggested a date around 2500 BC, later tests by Gary W. Carriveau and Mark C. Han in 1976 found that all samples failed the 'plateau test', indicating the dates were unreliable. Based on signal regeneration, they estimated the figures had been fired approximately 30 years prior to 1969. The figures continue to be cited in pseudoscientific works and by a small group of supporters, but they have no standing in legitimate archaeological or paleontological circles. Their legacy is as a cautionary example of how anecdotal claims and motivated reasoning can persist despite overwhelming contrary evidence.

Did You Know?

• Thermoluminescence dating conducted in 1969 estimated the figures had been fired approximately 30 years prior to that date, placing their creation around 1939.
• The figures were first publicly displayed in Julsrud's home, where visitors could view them for a small fee.
• Mainstream archaeologists, including Charles Di Peso of the Amerind Foundation, dismissed the figures as a hoax after noting the lack of archaeological context and the presence of modern tool marks.
• Despite scientific rejection, the Acámbaro figures continue to be cited by creationist and ancient astronaut theorists as evidence of human-dinosaur coexistence.