South Polar dinosaurs, illustration. These dinosaurs lived 145 to 100 million years ago (during the Early Cretaceous) in regions of what is now Antarctica and Australia. These areas were then joined as one continent (East Gondwana) and were located in the southern polar regions. The Earth's climate was warmer, leading to these areas being habitable. However, the long polar night and day of these regions led to a unique ecology, unlike any seen today. Visible in the sky are the lights (green) of an aurora australis (southern lights). This is caused by energetic particles from the Sun being drawn to the poles by the Earth's magnetic field, and impacting the upper atmosphere. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / JOHN SIBBICK |
Bildgröße: | 5695 px × 3717 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |