New evidence for an early settlement of the Yucatán Peninsula, Mexico: The Chan Hol 3 woman and her meaning for the Peopling of the Americas
Fig 2
Flowstone encrusting phalangeal bones of the Chan Hol 3 human individual.
For the original position of the sample on the cave floor see Fig 1C and 1F. Red arrows point to the position of distal radius and blue arrows to carpal and metacarpal bones, and blue circles to the position of samples used for 230Th/U-dating. (A) Sample seen from above. The dotted line indicates the position in which the sample was vertically cut. Note lateral view of distal radius fragment. The covered bone to the left is a carpal (I) and the one next to it is a metacarpal (II). (B) view of distal radius shown in (A) from above. (C) Vertical cross section of the sample. Note that the blue arrow points to the spherical aperture which originally represented the metacarpal and is now dissolved. (D) Magnification of the slab shown on the right side of (C), with the position of the three 230Th/U-dating samples with approximately coeval ages of 9.9±0.1 ky. A contaminating 230Th/232Th activity ratio of 3.96±0.09 is estimated from the Osmond isochron. Scale used in all figures is 20 mm.