Hesperornis Hesperornis rossicus Nessov and Yarkov 1993
/hˈɛspɚɹˌɔːɹniz/
estimated
Late Cretaceous (Campanian) · 83.6–72.2 Mya
Key Statistics
Diet
piscivore
Locomotion
bipedal
inferred from clade
Habitat
aquatic
Environment
marine
Where It Was Found
Countries
Russia, Sweden, Canada
Regions
Volgograd · Skåne · Manitoba · Saratov
Formations
Pierre Shale · Rybushka
Dig sites
4
distinct collections
Overview
Hesperornis rossicus is a theropod dinosaur known from the Late Cretaceous, roughly 83.6–72.2 million years ago. It was a piscivore. It is recorded as aquatic. Its remains come from marine deposits. Fossils have been recovered from Volgograd, Russia and elsewhere. It was named by Nessov and Yarkov 1993. The species is represented by 4 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~15%
confidence from occurrence count
Based on 4 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Hesperornis rossicus sits in deep time
Hesperornis
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Hesperornis rossicus's place in deep time — computed from overlapping age ranges, shared clades, and inferred ecology. Predator–prey pairs additionally have to have been dug up in the same place.