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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Reader, John |
Bildgröße: | 4921 px × 3302 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |