Science

Natural History Notebook (Canada) fossil coral section.

Photographs of Zaphrentis sp. and Canania cylindrica which are commonly found on beaches among the pebbles.

Photograph of a chunk of fossilised Isastraea sp. found on the beach in Scotland.

Photographs of Favosites gothlandicus, Halysites and Tryplasma sp. from Wenlock Edge, England.

Much of the limestone of the Silurian era was laid down in large reef systems. This article discusses the structure of the reef and the diverse species that lived among the coral.