A fossil of Priscacara sp. (only the larger of the two),an extinct genus of perch (Percidae family),which are characterized by their stout dorsal and anal spines. Here seen in a slab of Eocene limestone (some 50 million years old) from the Green River formation in Wyoming,USA. Certain particular locations in this formation,notably the marls at Fossil Lake,provide a wide variety of exceptionally well-preserved fossils,such as this one | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5616 px × 3744 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |