Arquivos da tag:stromatolite

Stromatolites, the oldest living fossils, part 2: Lagoa Salgada, Rio de Janeiro, Brazil / Estromatólitos, os mais velhos fósseis vivos, parte 2: Lagoa Salgada

Another place where we can find recent stromatolites, Earth’s oldest living fossils (see last post for more info) is at Lagoa Salgada, Rio de Janeiro, Brazil. The pools are for salt evaporation and exploration. Thanks @samyrvq for the very cool pics! Outro local onde podemos encontrar estromatólitos recentes, os fósseis vivos mais antigos da TerraContinuar lendo “Stromatolites, the oldest living fossils, part 2: Lagoa Salgada, Rio de Janeiro, Brazil / Estromatólitos, os mais velhos fósseis vivos, parte 2: Lagoa Salgada”

Stromatolites, the oldest living fossils – part 1: Shark Bay, Australia / Estromatólitos, os mais velhos fósseis vivos, parte 1: Shark Bay

Stromatolites are the oldest known evidence of life, dating back to more than 3.5 billion years ago. They are formed by colonies of cyanobacteria that trap mostly calcareous sediments in column-shaped structures. Nowadays they only occur in places with high salinity where animals that mess up the ocean floor in search of food (the seagrazers)Continuar lendo “Stromatolites, the oldest living fossils – part 1: Shark Bay, Australia / Estromatólitos, os mais velhos fósseis vivos, parte 1: Shark Bay”