The Alpine race is a historical race concept defined by some late 19th-century and early 20th-century anthropologists as one of the sub-races of the Caucasian race. The origin of the Alpine race was variously identified. Ripley argued that it migrated from Central Asia during the Neolithic revolution, splitting the Nordic and Mediterranean populations. It was also identified as descending from the Celts residing in Central Europe in Neolithic times. The Alpine race is mainly distinguished by its moderate stature, neotenous features, and cranial measurements, such as high cephalic index. The term "Alpine" (H. Alpinus) has historically been given to denote a physical type within the Caucasian race, first defined by William Z. Ripley (1899), but originally proposed by Vacher de Lapouge. It is equivalent to Joseph Deniker's "Occidental" or "Cevenole" race, while Jan Czekanowski regarded it as a subrace consisting of a mixture of Nordic and Armenoid. In the early 20th century, the Alpine physical type was popularised by numerous anthropologists, such as Thomas Griffith Taylor and Madison Grant, as well as in Soviet era anthropology. The German Nazi Party under the influence direction of Hans F. K. Günther, recognized the Germans as including five racial subtypes, described by Günther in his work Kleine Rassenkunde des deutschen Volkes (1929): Nordic, Alpine, Mediterranean, East Baltic, and Dinaric, viewing Nordics as being at the top of the racial hierarchy. He defined each racial subtype according to general physical appearance and their psychological qualities including their "racial soul"—referring to their emotional traits and religious beliefs, and provided detailed information on their hair, eye, and skin colours, facial structure, and body types. He provided photographs of Germans identified as Nordic in places like Baden, Stuttgart, Salzburg, and Swabia; and provided photographs of Germans he identified as Nordic and Mediterranean types, especially in Bavaria and the Black Forest region of Baden.