Fauna
Bird

Merriam's Teratorn

Teratornis merriami

Also known as Merriam's Teratornis, Teratorn

Merriam's Teratorns were enormous predatory birds that soared over North American savannas and open woodlands during the Pleistocene epoch. With robust feet, hooked beaks, and massive wingspans, they functioned as both active predators of small vertebrates and opportunistic scavengers at megafauna carcasses. The asphalt deposits at California's La Brea Tar Pits preserve hundreds of their fossilized bones, testifying to their prominent role in ancient raptor guilds until their extinction roughly 10,000 years ago.

CarnivorousPrehistoric
Merriam's Teratorn reference
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—observations
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ExtinctConservation statusIUCN Red List categoriesLCNTVUENCREWEXExtinctRed List categories, explained →
Key facts
Diet & preyPleistocene lagomorphs, Rodents, Small reptiles
Predators
  • Sabertooth Cat
  • Dire Wolf
  • American Lion
ThreatsMegafaunal extinction, climate shifts, and decline of large prey at the end of the Pleistocene
HabitatsPleistocene open woodlands, grasslands, savannas, and scrublands
Life spanEstimated 30–50 years
Classification
  1. FamilyTeratornithidae
  2. GenusTeratornis
  3. SpeciesTeratornis merriami
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 species; known exclusively from fossil and subfossil remains.
Responsible observation
  • Museum Viewing: Examine mounted fossil skeletons at institutions like the La Brea Tar Pits Museum.
  • Fossil Etiquette: Leave any prehistoric bone discoveries in situ and alert paleontological authorities.
Related species
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