Drag to rotate the Tyrannotitan, scroll or pinch to zoom, and click a body part - the head, an arm, the tail, or a leg - to read what fossils tell us about it. The panel beside the model carries the real figures.
Tyrannotitan is known mostly from an incomplete skull and a nearly-complete femur rather than a full skeleton, so its size is scaled from those bones and from closer relatives like Giganotosaurus - turn on the human figure to see how a person compares to its jaw and thigh bone.
The colors and skin here are an artistic reconstruction; fossils preserve bone, not soft tissue or color. This model is not a fossil-accurate skeleton. The measurements in the panel follow published estimates, with ranges shown where sources disagree.
Tyrannotitan 3D Viewer
This page renders a Tyrannotitan as a 3D model you can spin in the browser - drag to rotate, scroll or pinch to zoom, toggle a 1.8 m person beside it for scale, and click the head, an arm, the tail, or a leg to read a fact about that part.
Tyrannotitan chubutensis lived in the Early Cretaceous, in the Cerro Castano Member of the Cerro Barcino Formation near La Juanita Farm, 28 km northeast of Paso de Indios, Chubut Province, Argentina. Fernando Novas, Silvina de Valais, Patricia Vickers-Rich and Thomas Rich formally described and named the species in 2005, designating a partial skeleton (holotype MPEF-PV 1156) that includes partial lower jaws and teeth, a run of back and tail vertebrae, ribs and chevrons, a fragmentary shoulder girdle, a humerus and ulna, part of the hip, and a nearly complete femur and fibula - no complete skull or full skeleton has been found.
Published length estimates for Tyrannotitan range from about 11.6 m to as much as 12.2 m in some studies, and weight from about 6 to 7.4 tonnes, making it one of the largest theropods known. Its geologic age is usually cited as the Albian stage (roughly 113-100.5 million years ago), though some sources place it slightly earlier in the Aptian. Tyrannotitan belongs to the tribe Giganotosaurini within the carcharodontosaurid family, making it a close relative of the already-shipped Giganotosaurus 3D Viewer and Mapusaurus 3D Viewer - all three are giant Patagonian predators from a similar size class, but Tyrannotitan is the geologically oldest of the three by several million years.
| Measure | Figure |
|---|---|
| Length | about 11.6-12.2 m (estimates vary between studies) |
| Weight | about 6-7.4 tonnes |
| When it lived | roughly 113-100.5 million years ago (Albian, Early Cretaceous; some sources cite the slightly earlier Aptian) |
| Diet | Carnivore (apex predator) |
| Fossil material | Partial jaws and teeth, vertebrae, ribs, a shoulder fragment, a humerus and ulna, part of the hip, and a nearly complete femur and fibula (holotype MPEF-PV 1156) - no complete skull or skeleton |
Everything runs on your device with WebGL, so the model works without an account and without sending anything to a server. The skin tone and pattern are an artistic reconstruction, because fossils do not preserve color or soft tissue, and this model is not a fossil-accurate skeleton; the numbers above are real published values, with ranges shown because sources vary and Tyrannotitan is known from partial remains.
Frequently Asked Questions
How big was Tyrannotitan?
Published length estimates range from about 11.6 m to as much as 12.2 m in some studies, with weight estimates of about 6 to 7.4 tonnes - making it one of the largest theropods known. Turn on the human figure in the viewer to see the scale against a 1.8 m person.
Is Tyrannotitan related to Giganotosaurus?
Yes. Tyrannotitan belongs to the tribe Giganotosaurini within the carcharodontosaurid family, making it a close relative of the already-shipped Giganotosaurus and Mapusaurus 3D viewers. All three are giant Patagonian predators from a similar size class, but Tyrannotitan is the geologically oldest of the three by several million years.
Why is so little known about its skeleton?
The holotype (specimen MPEF-PV 1156) includes partial jaws and teeth, a run of vertebrae, ribs, a shoulder fragment, a humerus and ulna, part of the hip, and a nearly complete femur and fibula - but no complete skull or full skeleton has ever been found. Size and shape estimates are scaled from those bones and from more completely known relatives.
When and where did Tyrannotitan live?
In the Early Cretaceous, usually cited as the Albian stage (roughly 113 to 100.5 million years ago), though some sources place it slightly earlier in the Aptian. Its fossils come from the Cerro Castano Member of the Cerro Barcino Formation near La Juanita Farm, 28 km northeast of Paso de Indios, Chubut Province, Argentina. Fernando Novas, Silvina de Valais, Patricia Vickers-Rich and Thomas Rich formally described and named the species in 2005.
Is the model scientifically accurate?
The proportions follow published figures, but the skin color and texture are an artistic reconstruction - fossils preserve bone, not soft tissue or color. This model is not a fossil-accurate skeleton. The length, weight, and age figures shown are real published values, with ranges cited because sources disagree and the animal is known from partial remains.
Do I need to install anything to view it?
No. The model renders in your browser with WebGL - no app, no account, and nothing about your visit is sent to a server. The 3D engine loads once and is then cached.