GEOLOGY

Detailed explanation-1: -the world’s oldest known examples of fossil stromatolites (3.45 billion years old), found near Marble Bar in the Pilbara. one of the most continuous and best-studied records of fossil stromatolites, with examples from a broad range of geological periods. More items

Detailed explanation-2: -The oldest known fossils, in fact, are cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old. This may be somewhat surprising, since the oldest rocks are only a little older: 3.8 billion years old! Cyanobacteria are among the easiest microfossils to recognize.

Detailed explanation-3: -Researchers have unearthed a 380-million-year-old heart from a prehistoric fish-the oldest three-dimensionally preserved heart from a vertebrate ever found. They published their findings in the journal Science on Thursday.

Detailed explanation-4: -The most significant trace fossils from Western Australia include dinosaur trackways in the Broome Sandstone and traces and trackways from worms, giant sea scorpions and possibly early tetrapods (four-footed animals) in the approximately 400 million-year-old Tumblagooda Sandstone near Kalbarri.

Detailed explanation-5: -The oldest Stromatolites in the world are found in Western Australia, and date back 3.5 billion years old. As such, the stromatolites provide a record of local environmental changes.