Here is a picture of an Striatopora sp. coral fossil at the Museo di Paleontologia at Sapienza University of Rome Italy. It existed in the Silurian Period. The fossil was found in Sweden.
Here is a picture of a Pleurodictyum problematicumcoral fossil at the Museo di Paleontologia at Sapienza University of Rome Italy. It existed in the Devonian Period. The fossil was found in Eifel, Germany.
Here is a picture of a Brachyphyllian affinis coral fossil at the Museo di Paleontologia at Sapienza University of Rome Italy. It existed in the Upper Cretaceous Period. The fossil was found at Monte Grumi, Italy.