For a basic 500 square feet project in zip code 47474, the benchmark cost to Insulate Your Home ranges between $0.63 - $1.43 per square foot* . To estimate costs for your project: 1.
So in answer to your question, the oldest fossils are stromatolites, and the life forms that created those fossils were prokaryotic bacteria and algae like cyanobacteria.
Fossils are remains or traces of past organisms that have been preserved by nature. And here's a fun fact: the word 'fossil' is Latin and actually means 'obtained by digging,' which makes sense because they are often buried. Types of Fossils. There are many ways fossils can form, and we'll get to all that in a minute. First, let's discuss the two main ways that fossils can be classified: Body fossils ; and trace fossils ; The remains of a Hadrosaur are an example of a body fossil, or fossils of the actual organism.