Species
Dunkleosteus terrelli
Dunkleosteus terrelliAlso known as Terrell's Armored Fish
Dunkleosteus terrelli was a dominant marine apex predator of the Late Devonian, renowned for its massive, interlocking cranial and thoracic armor plates. Instead of true teeth, it wielded self-sharpening, shear-like bony gnathal plates driven by a complex four-bar linkage jaw mechanism capable of snapping shut in milliseconds. Biomechanical studies indicate its bite generated enough suction and crushing force to slice cleanly through armor-plated prey and early sharks.
PrehistoricCarnivoreAquatic
—observations
—countries
—peak records
ExtinctConservation statusIUCN Red List categoriesLCNTVUENCREWEXExtinctRed List categories, explained →
Diet & preyCladoselache sharks, Placoderm fish, Ammonoids
ThreatsLate Devonian extinction events (Hangenberg event)
HabitatsPelagic open ocean and epicontinental seas
Life spanEstimated 20–40 years
Classification
- FamilyDunkleosteidae
- SpeciesDunkleosteus terrelli
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Extinct prehistoric species known solely from fossil remains.
Responsible observation
- Museum Viewing: Examine the sheared gnathal plates on cast skulls to see how the bite auto-sharpened.
- Fossil Etiquette: Do not disturb bedrock or extract Devonian shale fossils without local permits.
Prey Dean Bashford / Public domain · cc0
Neighbor Hectonichus / CC BY-SA 3.0 · cc-by-sa
Close Relative PlacodermReconstructions / CC BY 4.0 · cc-by
Close Relative Morosaurus millenii / CC BY-SA 4.0 · cc-by-sa
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