The collection of the remains of the Krapina proto-human is a part of the world's scientific heritage, and it represents one of the largest collections of remains of the fossil man found ever in one spot. For that very reason, this collection is probably one of the best samples for studying possible population relationships of the fossil man in general, especially pertaining to the Neanedrthal species. It is convenient for various morphological research and determining of the variable samples. It also contains the largest teeth collection of the fossil man,

The fossil remains of the Krapina Neanderthal consist mainly of fragmented remains from various parts of the skeleton. These skeletal remains belong to the fossil remains of several dozen individuals (up to eighty), and show the specific biological variability of the neanderthal man. The main subjects concerning the Neanderthal man discussed in the paleonthrophological science has always been its place in the flow of evolution of the modern man.

All of the most significant findings of lower jaw bones from Krapina. Their variability and size differences are due to different size, age and sex.