point to the Indian subcontinent and not Central Asia. Proposed Yamnaya origins David Anthony considers the Yamnaya culture to be the Indo-European Urheimat. According to , a massive migration from the Yamnaya culture northwards took place c. 2,500 BCE, accounting for 75% of the genetic ancestry of the Corded Ware culture, noting that R1a and R1b may have "spread into Europe from the East after 3,000 BCE". Yet, all their seven Yamnaya samples belonged to the R1b-M269 subclade, but no R1a1a has been found in their Yamnaya samples. This raises the question where the R1a1a in the Corded Ware culture came from, if it was not from the Yamnaya culture. According to Marc Haber, the absence of haplogroup R1a-M458 in Afghanistan does not support a Pontic-Caspian steppe origin for the R1a lineages in modern Central Asian populations. According to Leo Klejn, the absence of haplogroup R1a in Yamnaya remains (despite its presence in Eneolithic Samara and Eastern Hunter Gatherer populations) makes it unlikely that Europeans inherited haplogroup R1a from Yamnaya. Archaeologist Barry Cunliffe has said that the absence of haplogroup R1a in Yamnaya specimens is a major weakness in Haak's proposal that R1a has a Yamnaya origin. do argue for a Yamnaya origin of R1a1a in the Corded Ware culture, noting that several publications point to the presence of R1a1 in the Comb Ware culture. Proposed Transcaucasia and West Asian origins and possible influence on Indus Valley Civilization found that part of the Yamnaya ancestry derived from the Middle East and that neolithic techniques probably arrived at the Yamnaya culture from the Balkans. The Rössen culture (4,600–4,300 BC), which was situated on Germany and predates the Corded Ware culture, an old subclade of R1a, namely L664, can still be found. Part of the South Asian genetic ancestry derives from west Eurasian populations, and some researchers have implied that Z93 may have come to India via Iran and expanded there during the Indus Valley civilization. proposed that the roots of Z93 lie in West Asia, and proposed that "Z93 and L342.2 expanded in a southeasterly direction from Transcaucasia into South Asia", noting that such an expansion is compatible with "the archeological records of eastward expansion of West Asian populations in the 4th millennium BCE culminating in the so-called Kura-Araxes migrations in the post-Uruk IV period." Yet, Lazaridis noted that sample I1635 of , their Armenian Kura-Araxes sample, carried Y-haplogroup R1b1-M415(xM269) (also