Question

which is oldest known fossil on the earth (a) dinosaur ( b) blue green algae (c) fungus (D) bacteria​

Answer 1

Answer:

Bacteria Fossil

Cyanobacteria: Fossil Record. The cyanobacteria have an extensive fossil record. The oldest known fossils, in fact, are cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old.

Answer 2

Step-by-step explanation:

.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!

a)Dinosaur:

Titanosaur

Titanosaurs are a group of dinosaurs that may have been the largest animals ever to walk the Earth. "It is the oldest record known, not only from Argentina but worldwide." The new discovery meant titanosaurs lived longer ago than previously thought.

b) Blue green algae:

Cynabacteria

Blue-green algae are actually types of bacteria known as Cyanobacteria. They normally look green and sometimes may turn bluish when scums are dying.

Taste and odour problems commonly occur with large concentrations of blue-green algae and some species are capable of producing toxins.

c) fungus:

Ourasphaira giraldae

World's Oldest Fossil Fungus Found. A multicellular fungus named Ourasphaira giraldae, which lived roughly 900 million to 1 billion years ago. is shown in this photograph from the University of Liege, Belgium released

d) Bacteria:

Permian Bacteria

In late 2000, scientists reported that they had revived four unknown strains of bacteria from the Permian era, about 250 million years ago. These Permian bacteria are now considered the oldest living organisms ever discovered in the world.