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Ohio is a state in North America.
In Sea Monsters[]
Dangerous Seas & Into the Jaws of Death[]
Nigel Marven traveled to Ohio during the Devonian period to try to find a Dunkleosteus. After he achieved his goal, he traveled forward in time to Eocene Egypt.
Inhabitants[]
- Dunkleosteus
- Bothriolepis
- Stethacanthus
- Onychodus
- Cladoselache
- Cheirolepis