Dinosaurs A to Z
Telmatosauridae

Kryptohadros kallaiae

"hidden hadrosauroid"

Generic ornithopod body-plan outline
You 1.8 m (5.9 ft) tall
Kryptohadros 5 m (16.4 ft) long
as long as 3 people standing fingertip to fingertip
generic ornithopod body plan, scaled to length — not a silhouette of Kryptohadros
Length
5 m (16.4 ft)
Period
Late Cretaceous (100–66 Mya)
Place
Europe
Food
Herbivore
Clade
Telmatosauridae
Kryptohadros reconstruction by Connor Ashbridge
Reconstruction · Connor Ashbridge (CC-BY)

Kryptohadros (“hidden hadrosauroid”) is an extinct genus of hadrosauroid ornithopod dinosaur known from the Late Cretaceous (Maastrichtian age) Densuș-Ciula Formation of Romania. The genus contains a single species, Kryptohadros kallaiae, known from a partial skull and skeleton. Phylogenetic analyses revealed Kryptohadros is closely related to the coeval Transylvanian Telmatosaurus and the Italian Tethyshadros, together forming a group of southeastearn European-endemic taxa, called the Telmatosauridae. Kryptohadros is the second named non-hadrosaurid hadrosauroid from the Hațeg Basin, following Telmatosaurus, which was named by Franz Nopcsa in 1903.

What we know

  • Named by Magyar et al., 2026.
  • Fossils found in Europe.

What we guess

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