What makes Metriacanthosaurus scientifically significant?

Metriacanthosaurus provides critical insights into the evolutionary radiation of Theropoda. Holotypes and fossil evidence indicate: Incomplete skeleton including pelvic elements, hind leg bones, and vertebrae.

Metriacanthosaurus (Metriacanthosaurus parkeri von Huene, 1932) - Size, Diet & Jurassic Period Facts

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Metriacanthosaurus (Metriacanthosaurus parkeri von Huene, 1932) - Size, Diet & Jurassic Period Facts | DinoOrigin

Evolutionary Taxonomy & Cladistics

View Dinosaur Phylogeny

Phylogenetic classification of Metriacanthosaurus parkeri von Huene, 1932 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	Metriacanthosaurus	Monophyletic prehistoric clade
Species	Metriacanthosaurus parkeri von Huene, 1932	Specific authority designation

Anatomy & Physical Characteristics

Metriacanthosaurus was an apex carnivore that lived in what is now southern England during the Oxfordian stage of the Late Jurassic. Its name, meaning 'moderately-spined lizard', refers to its neural spines, which are taller than those of Allosaurus but shorter than the sails of Spinosaurus or Acrocanthosaurus.

It gives its name to the family Metriacanthosauridae, an important group of tetanuran carnivores that flourished across Europe and Asia.

Diagnostic Morphological Traits

Classic allosauroid profile with an elevated dorsal ridge running along its back, long hind limbs, and blade-like teeth.

Comparative Scale & Biometrics

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

Approx. 4.4× human length

Metriacanthosaurus (Length)7–8 m (23.0–26.2 ft)

Adult Human1.8 m (6.0 ft)

Length

7–8 m (23.0–26.2 ft)

Height

2.2–2.6 m (7.2–8.5 ft)

Estimated Mass

0.9–1.2 metric tons (1,984–2,646 lbs)

Diet & Feeding Ecology

All Carnivore Species

Trophic Guild: Carnivore

Carnivorous; consumed contemporary herbivorous dinosaurs.

Paleobiology & Behavior

Medium-to-large allosauroid predator that stalked ornithopods and juvenile sauropods in Late Jurassic coastal woodlands. Excavated from the Oxford Clay of England, Metriacanthosaurus represents a close relative of Asian allosauroids like Sinraptor and contemporary Morrison predators like Allosaurus.

Habitat & Ecological Biome

Prehistoric Depositional Setting

Coastal scrublands, estuarine deltas, and subtropical archipelago forests.

Fossil Evidence & Specimen Records

Preserved Skeletal Material & Bonebeds

Incomplete skeleton including pelvic elements, hind leg bones, and vertebrae.

Discovery & Taxonomic Naming History

Year of Discovery / Description1923

Type Specimen Locality & FormationOxford Clay Formation, Dorset, United Kingdom

Excavated near Weymouth; named by German paleontologist Friedrich von Huene in 1932.

Geological Era & Chronostratigraphy

Explore All Jurassic Period Fauna

Jurassic Period PeriodTemporal Interval: 160–154 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

Europe Dinosaurs

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

Paleogeographic RealmEurope (Europe)

During the Mesozoic, Europe was largely an archipelago of islands, resulting in unique insular dwarf species and classic historical fossil discoveries.

Fossil Discovery Locality

Scientific Significance & Evolutionary Impact

The anatomical architecture of Metriacanthosaurus 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: Incomplete skeleton including pelvic elements, hind leg bones, and vertebrae.

Frequently Asked Questions About Metriacanthosaurus

Scientifically verified answers based on peer-reviewed paleontological evidence.

Q1.When did Metriacanthosaurus live?

Metriacanthosaurus lived during the Jurassic Period Period, approximately 160–154 Ma (million years ago). This places it within the Mesozoic Era.

Q2.How big was Metriacanthosaurus?

Paleontological estimates place Metriacanthosaurus at a length of 7–8 m (23.0–26.2 ft), a hip/standing height of 2.2–2.6 m (7.2–8.5 ft), and a body mass of 0.9–1.2 metric tons (1,984–2,646 lbs).

Q3.What was the diet of Metriacanthosaurus?

Classified as a carnivore, Metriacanthosaurus specialized in consuming Carnivorous; consumed contemporary herbivorous dinosaurs..

Q4.Where were Metriacanthosaurus fossils discovered?

Fossil specimens of Metriacanthosaurus have been recovered from Oxford Clay Formation, Dorset, United Kingdom, with notable historic specimens documented in 1923. Excavated near Weymouth; named by German paleontologist Friedrich von Huene in 1932.

Academic Literature & Peer-Reviewed References

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

Monographien zur Geologie und PalaeontologieView Publication
von Huene, F. (1932). Die fossile Reptil-Ordnung Saurischia, ihre Entwicklung und Geschichte. Monographien zur Geologie und Palaeontologie, 4(1-2), 1-361.
Curated & Verified: 2026-09-24

Metriacanthosaurus

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