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Alamosaurus Alamosaurus sanjuanensis Gilmore 1922
/ˌæləmoʊˈsɔːrəs/
Late Cretaceous (Maastrichtian) · 83.6–66 Mya
Key Statistics
Diet
herbivore
Locomotion
quadrupedal
inferred from clade
Habitat
ground-dwelling
Social
herding
Where It Was Found
Countries
United States, Mexico
Regions
New Mexico · Texas · Utah · Chihuahua
Formations
Ojo Alamo · Javelina · Kirtland · North Horn
Dig sites
31
distinct collections
Overview
Alamosaurus sanjuanensis is a sauropodomorph dinosaur known from the Late Cretaceous, roughly 83.6–66.0 million years ago. It was a herbivore. It is recorded as ground-dwelling and herding. Fossils have been recovered from New Mexico, United States and elsewhere. It was named by Gilmore 1922. The species is represented by 31 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~71%
well attested
Based on 31 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Alamosaurus sanjuanensis sits in deep time
Alamosaurus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Alamosaurus sanjuanensis'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.