What makes Dicraeosaurus scientifically significant?

Dicraeosaurus provides critical insights into the evolutionary radiation of Sauropodomorpha. Holotypes and fossil evidence indicate: Multiple articulated specimens housed in Berlin, including complete vertebral columns.

Dicraeosaurus (Dicraeosaurus hansemanni Janensch, 1914) - Size, Diet & Jurassic Period Facts

DinoOrigin.comEncyclopedia of Prehistoric LifePrehistoric Encyclopedia

Dicraeosaurus (Dicraeosaurus hansemanni Janensch, 1914) - Size, Diet & Jurassic Period Facts | DinoOrigin

Evolutionary Taxonomy & Cladistics

View Dinosaur Phylogeny

Phylogenetic classification of Dicraeosaurus hansemanni Janensch, 1914 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	Sauropodomorpha	Herbivorous saurischians characterized by elongated necks, columnar limbs, and enormous body volumes.
Genus	Dicraeosaurus	Monophyletic prehistoric clade
Species	Dicraeosaurus hansemanni Janensch, 1914	Specific authority designation

Anatomy & Physical Characteristics

Dicraeosaurus was an evolutionary departure from typical long-necked diplodocoids. Possessing a relatively short, thick neck and tall, Y-shaped neural spines along its vertebrae, it was specialized for low-level browsing between ground level and three meters height.

These neural spines formed an anchored scaffolding for powerful neck ligaments and muscular bands, allowing rapid horizontal feeding sweeps.

Diagnostic Morphological Traits

Medium-sized sauropod with a compact neck, high sloping hips, and twin-pronged vertebral spines.

Comparative Scale & Biometrics

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

Approx. 7.8× human length

Dicraeosaurus (Length)12–14 m (39.4–45.9 ft)

Adult Human1.8 m (6.0 ft)

Length

12–14 m (39.4–45.9 ft)

Height

3–3.8 m (9.8–12.5 ft)

Estimated Mass

4.0–6.0 metric tons (8,818–13,228 lbs)

Diet & Feeding Ecology

All Herbivore Species

Trophic Guild: Herbivore

Low ferns, horsetails, and understory shrubs cropped with slender pencil-like teeth.

Paleobiology & Behavior

Short-necked sauropod specialized in low-level browsing of ferns and shrubby vegetation. In the Tendaguru beds of Tanzania, Dicraeosaurus occupied a distinct ecological tier beneath colossal high-browsers like Giraffatitan and coexisted with armored stegosaurs like Kentrosaurus.

Habitat & Ecological Biome

Prehistoric Depositional Setting

Coastal estuaries, mangrove swamps, and seasonal scrub plains.

Fossil Evidence & Specimen Records

Preserved Skeletal Material & Bonebeds

Multiple articulated specimens housed in Berlin, including complete vertebral columns.

Discovery & Taxonomic Naming History

Year of Discovery / Description1909

Type Specimen Locality & FormationTendaguru Formation, Lindi Region, Tanzania

Excavated during the Tendaguru expeditions and named by Werner Janensch in 1914.

Geological Era & Chronostratigraphy

Explore All Jurassic Period Fauna

Jurassic Period PeriodTemporal Interval: 155–150 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

Africa Dinosaurs

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

Paleogeographic RealmAfrica (Africa)

Featuring the Bahariya and Kem Kem deltaic systems of North Africa, home to colossal riverine theropods and unique freshwater ecosystems.

Fossil Discovery Locality

Scientific Significance & Evolutionary Impact

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

Phylogenetic Placement: Informs cladistic debates concerning the divergence, skull biomechanics, and skeletal evolution of Jurassic Period fauna.
Paleoecological Guild: Documents trophic specialization (Herbivore) and predator-prey dynamics across its regional ecosystem.
Taphonomic Record: Multiple articulated specimens housed in Berlin, including complete vertebral columns.

Frequently Asked Questions About Dicraeosaurus

Scientifically verified answers based on peer-reviewed paleontological evidence.

Q1.When did Dicraeosaurus live?

Dicraeosaurus lived during the Jurassic Period Period, approximately 155–150 Ma (million years ago). This places it within the Mesozoic Era.

Q2.How big was Dicraeosaurus?

Paleontological estimates place Dicraeosaurus at a length of 12–14 m (39.4–45.9 ft), a hip/standing height of 3–3.8 m (9.8–12.5 ft), and a body mass of 4.0–6.0 metric tons (8,818–13,228 lbs).

Q3.What was the diet of Dicraeosaurus?

Classified as a herbivore, Dicraeosaurus specialized in consuming Low ferns, horsetails, and understory shrubs cropped with slender pencil-like teeth..

Q4.Where were Dicraeosaurus fossils discovered?

Fossil specimens of Dicraeosaurus have been recovered from Tendaguru Formation, Lindi Region, Tanzania, with notable historic specimens documented in 1909. Excavated during the Tendaguru expeditions and named by Werner Janensch in 1914.

Academic Literature & Peer-Reviewed References

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

Archiv für BiontologieView Publication
Janensch, W. (1914). Übersicht über die Wirbeltierfauna der Tendaguru-Schichten, nebst einer kurzen Charakterisierung der neu aufgeführten Arten der Sauropoden. Archiv für Biontologie, 3(1), 79-110.
Curated & Verified: 2026-09-24

Dicraeosaurus

Quick Facts