- Who
- Arthropleura armata
- What
- 2.6 metre(s)
- Where
- United Kingdom ()
- When
The largest arthropod (jointed-limbed invertebrate) currently known is Jaekelopterus rhenaniae, a gigantic species of eurypterid or sea scorpion formally described in November 2007. Based upon the finding of a 46-cm-long (1.51 ft) fossilised chelicera (claw-like mouthpart), the complete animal is estimated to have measured up to 2.6 m (8.53 ft) long.
