Fauna
Species

Camarasaurus

Morosaurus lentus

Also known as Chambered Lizard, Morosaur

Camarasaurus was a stout, robust sauropod distinguished by its boxy, blunt skull and broad, spoon-shaped teeth adapted for grinding coarse vegetation. Its vertebrae contained hollow chambers, or camerae, that significantly lightened its massive skeleton without sacrificing structural strength. Fossil trackways suggest these heavy herbivores traveled in loose social groups, browsing tough conifers and cycads across the Late Jurassic floodplains.

HerbivorousPrehistoric
—observations
—countries
—peak records
ExtinctConservation statusIUCN Red List categoriesLCNTVUENCREWEXExtinctRed List categories, explained →
Key facts
Diet & preyConifer foliage, Cycads, Seed ferns
Predators
  • Allosaurus fragilis
  • Torvosaurus tanneri
  • Ceratosaurus nasicornis
ThreatsPredation by large theropods and seasonal droughts
HabitatsSemi-arid floodplains, open fern savannas, and riverine woodlands
Life span40–70 years
Classification
  1. FamilyCamarasauridae
  2. SpeciesMorosaurus lentus
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Extinct prehistoric species known only from fossils; safe to observe in museum collections.
Responsible observation
  • Museum Viewing: Examine articulated skeletons at natural history museums to study the hollow vertebral chambers.
  • Fossil Sites: Look for shed spoon-shaped teeth in public quarries of the Morrison Formation in Utah and Wyoming.
Related species
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