Many of the conclusions have been speculative, based as they are mainly on a few old teeth, bones, and stones. ”
अनेक निष्कर्ष अनिश्‍चित हैं, क्योंकि वे मुख्यतः कुछ पुराने दाँतों, हड्डियों और पत्थरों पर आधारित हैं । ”