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Richardoestesia Richardoestesia isosceles Sankey 2001
/ɹˌɪtʃɚdoʊstˈiːʒə/
estimated
Late Cretaceous (Maastrichtian) · 100.5–66 Mya
Key Statistics
Diet
carnivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling
Where It Was Found
Countries
United States, Canada
Regions
Alberta · North Dakota · Montana · Texas
Formations
Hell Creek · Milk River · Aguja · Dinosaur Park
Dig sites
61
distinct collections
Overview
Richardoestesia isosceles is a theropod dinosaur known from the Late Cretaceous, roughly 100.5–66.0 million years ago. It was a carnivore. It is recorded as ground-dwelling. Fossils have been recovered from Alberta, United States and elsewhere. It was named by Sankey 2001. The species is represented by 70 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~94%
well attested
Based on 70 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Richardoestesia isosceles sits in deep time
Richardoestesia
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Richardoestesia isosceles'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.