What makes Gasosaurus scientifically significant?

Gasosaurus provides critical insights into the evolutionary radiation of Theropoda. Holotypes and fossil evidence indicate: Postcranial material including limb bones and pelvic elements housed at Zigong Dinosaur Museum.

Gasosaurus (Gasosaurus constructus Dong & Tang, 1985) - Size, Diet & Jurassic Period Facts

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Gasosaurus (Gasosaurus constructus Dong & Tang, 1985) - Size, Diet & Jurassic Period Facts | DinoOrigin

Evolutionary Taxonomy & Cladistics

View Dinosaur Phylogeny

Phylogenetic classification of Gasosaurus constructus Dong & Tang, 1985 based on peer-reviewed cladistic analyses of diagnostic skeletal synapomorphies.

Taxonomic Rank	Taxon / Clade	Diagnostic Context
Kingdom	Animalia	Monophyletic prehistoric clade
Phylum	Chordata	Monophyletic prehistoric clade
Clade	Dinosauria	Monophyletic prehistoric clade
Order	Saurischia (Lizard-Hipped Dinosaurs)	Characterized ancestrally by a triradiate pelvis with an anteriorly pointing pubis.
Suborder	Theropoda	Bipedal saurischian dinosaurs, historically dominated by carnivores and including the avian lineage.
Genus	Gasosaurus	Monophyletic prehistoric clade
Species	Gasosaurus constructus Dong & Tang, 1985	Specific authority designation

Anatomy & Physical Characteristics

Gasosaurus was a compact, fast-running carnivorous dinosaur from the Middle Jurassic Lower Shaximiao Formation of Sichuan, China. Growing to approximately 3.5 to 4 meters, it was a mid-tier predator that occupied the lush, riverine forests alongside massive sauropods.

Its comical name commemorates the petroleum company workers who discovered the Dashanpu fossil quarry while blasting for a gas facility.

Diagnostic Morphological Traits

Bipedal theropod with strong legs, shortened forelimbs, and a stiffened counterbalance tail.

Comparative Scale & Biometrics

Anatomical dimensions relative to an average adult human (1.8 m / 6 ft tall)

Approx. 2.2× human length

Gasosaurus (Length)3.5–4 m (11.5–13.1 ft)

Adult Human1.8 m (6.0 ft)

Length

3.5–4 m (11.5–13.1 ft)

Height

1.3–1.5 m (4.3–4.9 ft)

Estimated Mass

150–300 kg (331–661 lbs)

Diet & Feeding Ecology

All Carnivore Species

Trophic Guild: Carnivore

Carnivorous; fed on smaller vertebrates and early ornithischians like Agilisaurus.

Paleobiology & Behavior

Mid-sized tetanuran predator that stalked early sauropods and ornithischians in Middle Jurassic subtropical woodlands. In the Dashanpu Quarry deposits of Sichuan, Gasosaurus lived alongside club-tailed sauropods like Shunosaurus and early stegosaurs like Huayangosaurus.

Habitat & Ecological Biome

Prehistoric Depositional Setting

Subtropical braided river deltas and dense lake margins.

Fossil Evidence & Specimen Records

Preserved Skeletal Material & Bonebeds

Postcranial material including limb bones and pelvic elements housed at Zigong Dinosaur Museum.

Discovery & Taxonomic Naming History

Year of Discovery / Description1985

Type Specimen Locality & FormationLower Shaximiao Formation, Zigong, Sichuan, China

Discovered during gas construction work; described by Dong Zhiming and Tang Zilu.

Geological Era & Chronostratigraphy

Explore All Jurassic Period Fauna

Jurassic Period PeriodTemporal Interval: 166–164 Ma (million years ago)

Marked by lush greenhouse climates, the breakup of Pangaea, and the evolutionary explosion of sauropods, plated stegosaurs, and apex megalosauroid and allosauroid theropods.

Where It Lived & Paleoenvironment

Asia Dinosaurs

During the Mesozoic Era, continental drift progressively reconfigured land bridges, atmospheric currents, and regional precipitation regimes. Fossils of Gasosaurus evidence its adaptation to the paleoenvironments of Asia.

Paleogeographic RealmAsia (Asia)

Renowned for the exceptionally preserved feathered dinosaurs of Liaoning, China and the Cretaceous dune habitats of the Gobi Desert in Mongolia.

Fossil Discovery Locality

Scientific Significance & Evolutionary Impact

The anatomical architecture of Gasosaurus serves as a crucial benchmark in vertebrate paleontology, illustrating key adaptive radiations within Theropoda.

Phylogenetic Placement: Informs cladistic debates concerning the divergence, skull biomechanics, and skeletal evolution of Jurassic Period fauna.
Paleoecological Guild: Documents trophic specialization (Carnivore) and predator-prey dynamics across its regional ecosystem.
Taphonomic Record: Postcranial material including limb bones and pelvic elements housed at Zigong Dinosaur Museum.

Frequently Asked Questions About Gasosaurus

Scientifically verified answers based on peer-reviewed paleontological evidence.

Q1.When did Gasosaurus live?

Gasosaurus lived during the Jurassic Period Period, approximately 166–164 Ma (million years ago). This places it within the Mesozoic Era.

Q2.How big was Gasosaurus?

Paleontological estimates place Gasosaurus at a length of 3.5–4 m (11.5–13.1 ft), a hip/standing height of 1.3–1.5 m (4.3–4.9 ft), and a body mass of 150–300 kg (331–661 lbs).

Q3.What was the diet of Gasosaurus?

Classified as a carnivore, Gasosaurus specialized in consuming Carnivorous; fed on smaller vertebrates and early ornithischians like Agilisaurus..

Q4.Where were Gasosaurus fossils discovered?

Fossil specimens of Gasosaurus have been recovered from Lower Shaximiao Formation, Zigong, Sichuan, China, with notable historic specimens documented in 1985. Discovered during gas construction work; described by Dong Zhiming and Tang Zilu.

Academic Literature & Peer-Reviewed References

Authoritative citations establishing the factual taxonomy, biometrics, and anatomy of Gasosaurus.

Vertebrata PalAsiaticaView Publication
Dong, Z.-M., & Tang, Z.-L. (1985). A new mid-Jurassic theropod (Gasosaurus constructus gen. et sp. nov.) from Dashanpu, Zigong, Sichuan Province, China. Vertebrata PalAsiatica, 23(1), 77-83.
Curated & Verified: 2026-09-24

Gasosaurus

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