Fauna
Species

Iguanodon bernissartensis

Iguanodon bernissartensis

Also known as Bernissart Iguanodon

Iguanodon bernissartensis was a versatile herbivore capable of shifting seamlessly between quadrupedal browsing on low ferns and rearing up bipedally to strip high foliage. Heavily reinforced jaws functioned like grinding shears, using tightly packed batteries of self-sharpening teeth to pulverize tough, fibrous vegetation. Massive conical thumb spikes provided formidable close-range defense against predatory theropods, while flexible fifth digits helped grasp branches and stems.

HerbivorousPrehistoricFossil Taxon
—observations
—countries
—peak records
ExtinctConservation statusIUCN Red List categoriesLCNTVUENCREWEXExtinctRed List categories, explained →
Diet & preyFerns, Horsetails, Cycads
Predators
  • Neovenator
  • Baryonyx
ThreatsPredation by theropods, natural environmental shifts (extinct)
HabitatsFloodplains, river deltas, and subtropical open woodlands
Life spanEstimated 20–30 years
  1. FamilyIguanodontidae
  2. SpeciesIguanodon bernissartensis
Range data is not available yet.
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Extinct species known only from fossil remains; safe to observe in museum exhibits.
Responsible observation
  • Museum Viewing: Observe the historic articulated skeletons at the Royal Belgian Institute of Natural Sciences.
  • Anatomy Clues: Look closely at fossil casts to see the sharp, conical thumb spike once thought to be a horn.
  • Trackway Analysis: Search for three-toed fossil trackways that reveal both quadrupedal and bipedal gaits.
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