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.
Most fossils arehardened animal remains such as shells, bones, and teeth.Minerals replace the remains, forming a fossil of the hardskeletal body parts. Other fossils are impressions or otherevidence of an organism preserved in rock.Sometimes, anactual organismâor part of an organismâcan be preservedand become a fossil.ost fossils arehardened animal remains such as shells, bones, and teeth.Minerals replace the remains, forming a fossil of the hardskeletal body parts. Other fossils are impressions or otherevidence of an organism preserved in rock.