Step back into the Upper Cretaceous period with the Perisphinctes Ammonite Fossil Pair, a rare and fascinating find from the remote region of Irian Jaya, Western New Guinea, Indonesia. This positive/negative pair showcases the full three-dimensional form of the ammonite, capturing every detail of its coiled structure. The fossils’ natural hues and textures, preserved in remarkable clarity, provide an authentic glimpse into prehistoric marine life. Ideal for serious collectors, this unique pair serves as both an educational artifact and a captivating piece of natural history.