Here is a picture of a Palaeocarpillus sp. crab fossil at the Museo di Paleontologia at Sapienza University of Rome Italy. Creatures like this existed in the Eocene Epoch of Paleogene Period.
These images show an Eospirifer radiatus brachiopod fossil with a fossilized Cornulites proprius worm tube. It was found in the Waldron Shale of Clark County Indiana USA. These creatures existed in the Silurian Period.
These images are of Thecidea papillata (von Schlotheim) brachiopod fossil. It existed in the upper Cretaceous Period (Upper Maastrichtian). Found in Lichenberg Horizon of Maastricht Netherlands.