bibroni" is endemic to New Guinea, where it is only found on the southern part of the island, south of the Central Range.In the past, there was some confusion about its range limits, but it is now clear that the species found throughout much of South and Southeast Asia is Cantor's giant softshell turtle ("P. cantorii" ) and that the species in northern New Guinea is the northern New Guinea giant softshell turtle ("P. signifera").