The Saccopastore skulls are a pair of fossilized hominid skulls that were found by the Aniene river in Lazio, Italy. They were located in a gravel pit about 2.5 km before the Aniene merges into the Tiber river. The first skull was discovered in 1929, and appears to be that of an adult female. The second was found in 1935 by Professors Breuil and Blanc, and forms part of the face of possibly a 35-year-old male. Both specimens appear to be Neanderthal, but display characteristics that differed from classical Neanderthal skulls.
For more information, click here. Or, Try these sources:
Sirocko, Frank; Claussen, M.; Sanchez-Goni, M. F. (2007). The Climate of Past Interglacials. Elsevier. ISBN 0-444-52955-1.
Skulls not ours to keep by Phillip Tobias - Daily News, RSA. October 11, 2005. Can be read here.
"Italy's first Neanderthal dates back 250,000 years". The Local. 4 Nov 2015. Can be read here.