Silurian colonial coral Acervularia ananas. Found in Shropshire, probably from Wenlock Edge. Acervularia pentagona is an extinct species of tabulate coral.
Tabulata, commonly known as tabulate corals, are an order of extinct forms of coral. They are almost always colonial, forming colonies of individual hexagonal cells known as corallites defined by a skeleton of calcite, similar in appearance to a honeycomb. Adjacent cells are joined by small pores. Their distinguishing feature is their well-developed horizontal internal partitions (tabulae) within each cell, but reduced or absent vertical internal partitions (septa). They are usually smaller than rugose corals, but vary considerably in shape, from flat to conical to spherical.
Imaged using a canon 5DS R and Stackshot 3x with turntable to provide 108 images which were then processed using agisoft photoscan at high levels.
This object is scanned by Fossils in Shropshire