noun

• A very large flightless bird of the Eocene epoch.

  ‘Widely different opinions have been offered since the first discovery of Gastornis in 1855.’

  More example sentences

  • ‘Given its huge size, Gastornis must have been a silent ambush hunter in the thick forests.’
  • ‘Unfortunately, while the Gastornis is out hunting, a horde of large ants (known as Formicium) ambush its baby.’
  • ‘Large flightless birds have been found in later Paleocene rocks in some parts of the world, like Gastornis in Europe, and could have hunted mammals.’
  • ‘Another forest dweller at that time was Gastornis, a flightless bird as tall as a man and weighing some 100 kilograms.’