Acutiramus was among the largest eurypterids, estimated to be about 2 meters long, and pincers about 5 centimeters long. It was eclipsed in size by its relatives Pterygotus and Jaekelopterus. Many authorities regard Acutiramus as a synonym of Pterygotus.
- Acutiramus in Eurypterids.net
- Acutiramus at BioLib
- Pincer fossil of Pterygotus (Acutiramus)
- Acutiramus at Palaeos
- Giant sea scorpion fossil (Acutiramus)