Prof. Ana Luisa Cid's site features some very interesting photographs of footprints clearly belonging to something
from the Cenozoic (or thereabouts!). A letter from Ing. Narciso Rodriguez, who discovered these impression in the
northern Mexican state of Coahuila some sixteen years ago, states that the footprints are specifically located in
the outskirts or Arteaga, some 20 minutes away from Saltillo, the area's largest city. Photos have been sent to the
local anthropological museum. Our thanks to Prof. Cid and Ing. RodrÃguez for these images.