Here is a picture of an Acervularia truncata coral fossil at the Museo di Paleontologia at Sapienza University of Rome Italy. It existed in the Silurian Period.
Here is a picture of a Syringopora-sp and Favosites sp colonialcoral fossils at the Museo di Paleontologia at Sapienza University of Rome Italy. It existed in the Silurian Period. The fossils were found in Sweden.
Similar fossils are found in the Louisville Limestone of Louisville, Kentucky, USA.
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.