Halimornis

You 1.8 m (5.9 ft) tall
Halimornis 5 m (16.4 ft) long
as long as 3 people standing fingertip to fingertip
Length
5 m (16.4 ft)
Period
Late Cretaceous (80 Mya)
Place
Australia
Food
Herbivore
Clade
Avisauridae

Halimornis was an enantiornithean bird. It lived during the Late Cretaceous about 80 mya and is known from fossils found in the Mooreville Chalk Formation in Greene County, Alabama. It is known from a single fossil individual, including preserved vertebrae, leg bones and part of the humerus (upper arm bone).

At the time, the area where the Mooreville Chalk was deposited was situated on the southern coast of the Western Interior Seaway, and may have been the site of a large delta where several major rivers flowed into the shallow sea. The fossil bird was found at a location that would have been about 50 km off shore, indicating that it was an ocean-going species. The name Halimornis means “bird of the sea”. It would have lived alongside the more advanced seabird Ichthyornis dispar.

What we know

  • Named by Chiappe, Lamb & Ericson, 2002.
  • Fossils found in Australia.

What we guess

The reconstruction notes for Halimornis — soft tissue, color, behavior — haven't been written up yet. Only the recorded basics above are filled in so far.