Here are some shells I found in Florida in the 1980s. The worm-like fossil was found on the East Coast and the miniature coral fossil was found on the Gulf Coast.
Here are a few fossils that have been "sliced" to show more details of the inside of the fossils. The round ones are Ammonites and the long one is a Trilobite.
This is another fossil Ammonite known as Perisphinctes sp. It is from the Middle Jurassic period and is 160 million years old. It was found in Morondava, Madasgascar.
This is a fossil reptile "poop" also known as Coprolite. It comes from the Cretaceous period and is anywhere from 65 to 75 million years old. It was found in Southern Madagascar.
Here are two views of a fossilized coral. I don't know the age of this fossil. I found it on a Gulf Coast beach in Florida many years ago. I was amazed to find it sitting on the beach.