He has contributed to the direct radiocarbon dating of original human fossils, and through that work to insights into their diets through the analysis of carbon (C) and nitrogen (N) stable isotopes.
[7] Subsequent major projects concerned with early modern humans include the Abrigo do Lagar Velho (Portugal)[8] Dolní Věstonice and Pavlov Moravia, Czech Republic,[9] Peştera cu Oase (Romania),[10] Peştera Muierii (Romania),[11] Mladeč (Czech Republic),[12] Tianyuandong (China),[13] and Sunghir (Russia).
[14] Additional Neandertal descriptions include those from Krapina (Croatia),[15] Oliveira (Portugal),[16] Kiik-Koba (Crimea),[17] and Sima de las Palomas (Spain).
[22][23] These paleontological descriptions include both primary data on these fossils and a diversity of paleobiological interpretations of the remains and the Pleistocene human groups from which they derive.
[24][25] And his paleopathological analyses of Pleistocene human remains have raised questions concerning the levels and natures of trauma[26] and developmental abnormalities among these people.