Poop Full size 320 × 319 pixels Early agriculture in eastern North America Archaeologist Dennis Jenkins holds a piece of dried human feces dated to 14,300 years ago. University of Oregon. Archaeologist Dennis Jenkins holds a piece of dried human feces dated to 14,300 years ago. University of Oregon. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.