Invertebrate
Jaekelopterus
Jaekelopterus rhenaniae was a very large eurypterid with formidable grasping chelicerae.
Jaekelopterus rhenaniae was a very large eurypterid with formidable grasping chelicerae. Fossil appendages reveal a striking arthropod that differed greatly from an ordinary scorpion.
Three stages. One companion.
Game artwork


AI-generated, stylized game illustrations. These designs and growth stages are imaginative, not scientific reconstructions.
Jaekelopterus at a glance
- Diet
- Carnivore
- Its teeth and feeding structures are interpreted as adapted to taking animal prey.
- When it lived
- Early Devonian
- Group
- Eurypterida
- Sea scorpions
Beyond the game
The real Jaekelopterus
Jaekelopterus rhenaniae was a very large eurypterid with formidable grasping chelicerae. Fossil appendages reveal a striking arthropod that differed greatly from an ordinary scorpion.
The grasping appendages are especially informative parts of its fossil record. Published estimates of its full size depend on comparisons between those preserved structures and other eurypterids.
Fossil discoveries
Selected fossil records · present-day map
Map references
Map: Natural Earth, public domain. Fossil records: Paleobiology Database and linked collections and publications.Sources & text credits
Explore the references behind this profile.
Original English Dinosgacha educational summaries informed by the linked scientific and museum references; source publications retain their own rights.