Early bird footprints. Guinea fowl-like bird footprints at Laetoli, Tanzania. The rock bed on which they are preserved is 3.7 million years old. These footprints were discovered by Mary Leakey in 1976. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Reader, John |
Taille de l’image : | 5132 px × 3508 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |