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Direct Paleobiological Analysis
Patagotitanvs.Amargasaurus
A side-by-side scientific comparison of physiological dimensions, biomechanics, temporal horizons, and anatomical specializations.
Comparing 2 of maximum 4 specimens
SauropodomorphaPatagotitan
Patagotitan mayorum Carballido et al., 2017
One of the most colossal land animals ever discovered, reaching 37 meters in length and weighing over 55 metric tons.
SauropodomorphaAmargasaurus
Amargasaurus cazaui Salgado & Bonaparte, 1991
A striking, double-sailed dicraeosaurid sauropod from Argentina sporting parallel rows of tall neck spines.
Comparative Paleobiological & Anatomical Matrix
| Feature / Trait | Patagotitan | Amargasaurus |
|---|---|---|
Total Length | 35–37.5 m (114.8–123.0 ft) Estimated maximum | 8.5–10 m (27.9–32.8 ft) Estimated maximum |
Hip Height | 6–7.5 m (19.7–24.6 ft) Model estimate | 2.2–2.7 m (7.2–8.9 ft) Model estimate |
Body Mass | 50.0–65.0 metric tons (110,231–143,300 lbs) Volumetric/allometric model | 2.5–4.0 metric tons (5,512–8,818 lbs) Volumetric/allometric model |
Epoch Horizon | Cretaceous Period 102–100 Ma (million years ago) | Cretaceous Period 129–122 Ma (million years ago) |
Diet & Trophic Role | Herbivore Gymnosperms, tree ferns, and early flowering plants stripped in vast quantities with cylindrical teeth. | Herbivore Low-growing ferns, cycads, and horsetails stripped with pencil-shaped peg teeth. |
Taxonomic Clade | Sauropodomorpha(Suborder) | Sauropodomorpha(Suborder) |
Fossil Localities | Cerro Barcino Formation, Chubut Province, Argentina Named: 2012 | La Amarga Formation, Neuquén, Argentina Named: 1984 |
Locomotion & Behavior | Colossal titanosaur sauropod ranking among the largest terrestrial animals to ever walk the Earth. Discovered in the Cerro Barcino Formation of Argentina, Patagotitan is ecologically and anatomically comparable to other giant South American titanosaurs such as [Argentinosaurus](/dinosaurs/argentinosaurus) and [Dreadnoughtus](/dinosaurs/dreadnoughtus). | Low-browsing sauropod that used its neck spines for visual signaling, defense, or sexual display. Phylogenetically allied with the Late Jurassic African [Dicraeosaurus](/dinosaurs/dicraeosaurus), Amargasaurus represents a specialized South American branch of short-necked dicraeosaurids adapted to low-tier foraging. |
Holotype & Fossils | Over 150 well-preserved bones representing six individuals, including a giant 2.4-meter femur. | Nearly complete skeleton with intact skull, cervical spine, and postcrania at MACN, Buenos Aires. |
Paleontological Uncertainty Advisory: Anatomical dimensions, body masses, and metabolic rates are scientific estimates derived from volumetric scaling, laser scanning, and biomechanical limb bone allometry. Missing traits indicate non-preserved fossil elements rather than anatomical absence.