Tiktaalik roseae,computer artwork. This extinct lobe-finned fish lived during the Late Devonian period (375 million years ago). A Tiktaalik roseae fossil was found in the Canadian Arctic in 2004. When scientists later analysed its skull,it was found to demonstrate a key transitional stage between fish and tetrapods (four-limbed vertebrates). It had fish-like fins with thin ray bones and scales,but also a flattened skull (similar to a crocodile),a mobile neck,sturdy shoulders,lungs,and ribs - features characteristic of tetrapods. Tiktaalik roseae is thought to have lived in shallow water,using its fins to prop itself up | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Victor Habbick Visions |
Bildgröße: | 5911 px × 4729 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |