Here is a very large and nice trilobite of the species Angelina sedgwickii from the Tremadoc of Tremadog near Porthmadog. This trilobite offers a large size and a detailed preservation. Like all trilobites from the Porthmadog region shows this fossil also some tectonic deformation.
Tremadog, Porthmadog, North Wales, UK
about 71 wide & 91mm long
Unteres Ordovizium, Tremadoc, A. sedgwickii Zone ( ca. 487 Mill. Jahre)