Paleontologist working in the field of paleontology looking at fossil rock
Ancient Stromatolites in seven colores lagoon near Bacalar, Quintana Roo, Mexico
Dead coral stones on water surface background. Calcic skeleton of reef polyps. Marine invertebrates. Colonies of many identical individual polyps. Reef builders. Sea wave and rocks
Aerial view of Bayanzag flaming cliffs in Mongolia
Sandstone tales of time and erosion in Ille-sur-Têt.