Dinosaurs A to Z
Caenagnathidae

Eoneophron infernalis

"dawn"

Generic theropod body-plan outline
You 1.8 m (5.9 ft) tall
Eoneophron 5 m (16.4 ft) long
as long as 3 people standing fingertip to fingertip
generic theropod body plan, scaled to length — not a silhouette of Eoneophron
Length
5 m (16.4 ft)
Period
Late Cretaceous (100–66 Mya)
Place
North America · South Dakota, USA
Food
Omnivore
Clade
Caenagnathidae
Eoneophron reconstruction by Ddinodan
Reconstruction · Ddinodan (CC-BY)

Eoneophron (meaning “dawn Neophron”) is an extinct genus of caenagnathid theropod dinosaur from the Late Cretaceous Hell Creek Formation of South Dakota, US. The genus contains a single species, E. infernalis, known from a partial hindlimb.

What we know

  • Named by Atkins-Weltman et al., 2024.
  • Fossils found in North America and South Dakota, USA.

What we guess

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