This image shows the trilobite in two pieces: part of the head and thorax/back. Maybe it was a molt. See this link for different picture of this same specimen: http://www.kyanageo.org/Fossils/silurian/arthropoda/trimerus_delphinocephalus.jpg
Here is a link that shows another from the same area but it appears fully intact: http://weekstrilobites.com/Trimerus.htm
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkUbQaIvGl8UOzv2rKmDKiVoKS3UDKXIffR_S2qo8lTs6scWKo5jzFe3dKywXQaYItA0k6iQGn1ev7kxM7gDNJ6lfNqGp6_GpK8jVn32MU-VYYz3RpK1GA9Ks2kfUER5A3zRlNtKU6ZyhF/s400/trimerus.jpg)