Body length
InferredMuseum reference estimate:13 m.
An illustrative reference size, not a measured complete individual or species range. [D3]
EXHIBIT 275
Mapusaurus
Mapusaurus roseae
Dinosaur
A large Argentine meat-eating dinosaur known from a concentration of fossils belonging to several individuals. [3]
TWO WAYS TO PICTURE THE PAST
Science & the silver screen
Compare the evidence with the familiar movie image. The illustrations are not to a shared scale.
01 / SOURCE-INFORMED RECONSTRUCTION
A life reconstruction from the evidence
Image unavailableIllustrative life reconstruction of Mapusaurus in a period-appropriate environment; coloration and missing anatomy are interpretations.The exhibit and its credited image source remain available.
An illustrative reconstruction. Compare its anatomy with the evidence and limitations in the dossier. [1]
Source-informed reconstruction. Appearance evidence [1]. Original illustration; missing anatomy, coloration and scenery include interpretation.
Fossils constrain this life reconstruction. Missing anatomy, coloration and the environmental scene include interpretation; the dossier explains the evidence limits.
02 / MOVIE-STYLE INTERPRETATION
A cinematic imagination
Image unavailableIllustrative reconstruction of Mapusaurus roseae; missing anatomy, pose, skin and colors are hypotheses.The exhibit and its credited image source remain available.
An illustrative reconstruction. Compare its anatomy with the evidence and limitations in the dossier. Lighting, coloration and scenery are artistic choices. This image does not document a fossil locality or behavior.
Original artwork · artistic interpretation.
Scientific view: source-informed reconstruction, credited paleoart or specimen-based imagery. Movie-style view: Original artistic interpretation. Reconstructions involve uncertainty.
PERIODLate Cretaceous[1]
DIETCarnivoreEvidence and uncertainty in the dossier
TOTAL LENGTH13–13 mEstimate scope matters
FOSSILS FOUNDArgentina[1]
MEET THE ANIMAL
Meet Mapusaurus
Mapusaurus was a large meat-eating dinosaur from what is now Argentina. The Natural History Museum lists a reference length of about 13 meters. That figure gives a sense of scale, but it is not a measurement of one complete fossil or a rule for every adult. Its fossils belong to the carcharodontosaurids, a group of large predatory dinosaurs. [D3]
Its deep, narrow skull and blade-like teeth are useful identifying features. The original description compared its bones with those of Giganotosaurus and found differences that supported a separate genus. The quarry contained bones from several animals at different growth stages. This raises interesting questions about grouping, yet fossils can also accumulate over time. A bonebed alone cannot demonstrate a coordinated hunting pack. [D1]
A later study looked closely for damage and disease. Researchers found abnormalities consistent with injuries and infections among the examined bones. These traces tell us something about challenges the animals survived, but they cannot replay the incidents. A damaged bone might have several possible causes. Keeping those possibilities open is part of learning from fossil evidence. [D2]
PREHISTORIC ANIMAL DOSSIER
A life in profile.
The animal, the evidence, and the questions still open.
Bone abnormalities provide evidence of injuries and disease, without identifying the events that caused them. [D2]
Profile scope: This exhibit concerns Mapusaurus roseae from the Huincul Formation, excluding Giganotosaurus. [D1]
- Time
- Late Cretaceous
- Fossil locations in this exhibit
- Argentina
How to read the evidence
Source supported identifies a description documented by the cited source. Inferred marks a reconstruction or functional estimate. Debated marks competing interpretations. Not established means the sources reviewed for this dossier do not support a firm conclusion; it does not mean a behavior never occurred.
A size reference is an estimate, not a population range. Nesting evidence does not by itself establish courtship, mate choice, or lifelong pairing.
Body mass
Not establishedNot established here
No adopted quantitative body-mass model was established in the reviewed sources. [D2]
Diet and feeding
InferredCarnivorous dinosaur.
Predatory classification does not identify preferred prey or cooperative hunting. [D3]
Habitat and setting
InferredSeasonal stream deposits in a relatively dry landscape.
The original paper interprets an ephemeral channel; burial setting is not an exclusive habitat preference. [D1]
Movement
InferredBipedal terrestrial movement.
Hindlimb anatomy supports two-legged locomotion; running speed is unresolved. [D1]
Recognizable anatomy
InferredDeep, narrow skull and blade-like teeth.
The lacrimal ornament is low and flattened; complete soft tissues are reconstructed. [D1]
Reproduction & life together
Reproduction and nesting
Not establishedNot established here
No assigned eggs or nest established in the inspected bonebed studies. [D2]
Mating and courtship
Not establishedNot established here
Injury evidence does not establish mating contests or courtship rituals. [D2]
Social behavior
DebatedPossible grouping remains debated.
Several growth stages occur together, but accumulated carcasses remain an alternative; coordinated hunting is unproven. [D1]
Dossier research & sources
Sources and inspection notes for the claims in this profile.
- Coria and Currie (2006), A new carcharodontosaurid (Dinosauria, Theropoda) from the Upper Cretaceous of ArgentinaGeodiversitas / Muséum national d’Histoire naturelle · Accessed 2026-10-09Original 48-page published PDF inspected, including diagnosis, low lacrimal horn, skull/limb descriptions, p 109–110 seasonal-channel interpretation and alternative bonebed explanations. · Inspected: page
- Bell and Coria (2013), Palaeopathological Survey of a Population of MapusaurusPLOS ONE · Accessed 2026-10-09Original study abstract and methods/results on nine individuals,176 examined elements, injury/infection interpretation and limits inspected. · Inspected: page
- Mapusaurus, Dino DirectoryNatural History Museum, London · Accessed 2026-10-09Complete indexed institutional profile inspected;13 m is a museum reference estimate. Speculative pack/family language is checked against the original bonebed caveats. Direct page fetch failed. · Inspected: excerpt
THE STORY IN THE FOSSILS
Evidence behind Mapusaurus
The name-bearing fossil is a nasal bone; numerous additional elements supply its broader anatomy. Several individuals must remain distinct when building a composite reconstruction. [1]
Researchers examined 176 bones for abnormalities. Pathology can reveal a living animal’s difficulties while leaving the cause of a particular injury uncertain. [2]
A note on scale and time
The dossier identifies the scope of each reference estimate. A mount, an individual fossil and a species-wide adult range are different measurements. Comparison metrics remain unavailable where adult scope has not been established. Unknown does not mean zero.
Sources & editorial notes
Sources support the stated claims and scopes. Refer to the evidence notes for uncertainty.
- Coria and Currie (2006), A new carcharodontosaurid (Dinosauria, Theropoda) from the Upper Cretaceous of ArgentinaGeodiversitas / Muséum national d’Histoire naturelle · Accessed 2026-10-09Original 48-page published PDF inspected, including diagnosis, low lacrimal horn, skull/limb descriptions, p 109–110 seasonal-channel interpretation and alternative bonebed explanations. · Inspected: page
- Bell and Coria (2013), Palaeopathological Survey of a Population of MapusaurusPLOS ONE · Accessed 2026-10-09Original study abstract and methods/results on nine individuals,176 examined elements, injury/infection interpretation and limits inspected. · Inspected: page
- Mapusaurus, Dino DirectoryNatural History Museum, London · Accessed 2026-10-09Complete indexed institutional profile inspected;13 m is a museum reference estimate. Speculative pack/family language is checked against the original bonebed caveats. Direct page fetch failed. · Inspected: excerpt
KEEP EXPLORING
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