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EXHIBIT 125

Malawisaurus

Malawisaurus dixeyi

Malawisaurus was a plant-eating titanosaur from Malawi, known from skull elements, vertebrae, limb bones and dermal armor. [4]

Evidence profile
PERIODEarly Cretaceous[3]
DIETHerbivoreEvidence and uncertainty in the dossier
TOTAL LENGTHSee the dossierEstimate scope matters
FOSSILS FOUNDMalawi[2]
CompareRead the dossierView the sources

MEET THE ANIMAL

Meet Malawisaurus

Malawisaurus was a plant-eating sauropod from Malawi. Its museum profile gives a length reference of about nine metres, without identifying a complete measured adult or a growth stage. That figure introduces the body at a broad scale. More detailed questions about anatomy and maturity depend on the individual bones examined in research. [D4]

A blunt front of the snout and flattened teeth helped distinguish it from sauropods once grouped under older names. These features are consistent with gathering plants, but they do not identify a precise menu or a particular feeding height. The fossil teeth preserve the food-gathering equipment more securely than a scene showing the animal choosing vegetation. [D1]

Another study examined a fused braincase and an associated upper-arm bone. The braincase suggested maturity, and the limb measurement supported a model of body mass. Association and calculation still leave uncertainty; the result is not an adult population range. The same work acknowledges disagreement about the age of the Dinosaur Beds. The fossil's identification, maturity and geological age all affect how its body is reconstructed. [D3]

PREHISTORIC ANIMAL DOSSIER

A life in profile.

The animal, the evidence, and the questions still open.

Its blunt snout, flattened teeth and distinctive tail joints distinguish an early titanosaur with unusually informative cranial remains. [D1]

Profile scope: Genus profile centered on Malawisaurus dixeyi. Dinosaur Beds quarries contain several sauropod taxa; not every bone belongs to this genus. [D2]

Time
Early Cretaceous
Fossil locations in this exhibit
Malawi
How to read the evidence

Source supported identifies a description documented by the cited source. Inferred marks a reconstruction or functional estimate. Debated marks competing interpretations. Not established means the sources reviewed for this dossier do not support a firm conclusion; it does not mean a behavior never occurred.

A size reference is an estimate, not a population range. Nesting evidence does not by itself establish courtship, mate choice, or lifelong pairing.

Body length

Inferred

About 9 m; museum reference

The directory supplies a whole-body reference without an individual, life stage or estimation method. It is not a measured adult maximum or a population range. [D4]

Body mass

Inferred

About 4.73 tonnes; associated-limb model

The estimate uses humerus Mal-221 circumference and a published regression. Its associated braincase Mal-202-1 has fused bones suggesting maturity; association and modeled mass retain uncertainty. [D3]

Diet

Inferred

Plants

Flattened teeth and the blunt snout are consistent with plant cropping. Tooth shape does not establish exact foods, preferred height or a daily consumption rate. [D1]

Habitat & fossil setting

Inferred

Dinosaur Beds near Karonga; age debated

The study adopts Early Cretaceous, commonly Aptian, for Malawi’s Dinosaur Beds but acknowledges a proposed Late Cretaceous correlation. The catalog’s Early Cretaceous category does not erase that disagreement. [D3]

Movement

Inferred

Four-legged sauropod reconstruction

The referred limb and girdle material supports terrestrial quadrupedal reconstruction. No reviewed genus-specific trackway establishes speed or habitual neck posture. [D2]

Distinctive anatomy

Source supported

Blunt snout and contrasting tail joints

Anterior tail centra are procoelous, whereas middle and distal centra are comparatively flat-ended. Dermal osteoderm Mal-204 is referred to the genus, but it does not establish a complete armor pattern. [D2]

Reproduction & life together

Reproduction & nesting

Not established

Not established here

Focused nesting and reproduction searches found no securely assigned egg clutch, nest architecture, incubation behavior or parental-care evidence in the reviewed genus-specific sources.

Courtship & mating

Not established

Not established here

Reviewed descriptions and focused searches do not establish calls, displays, mate choice or sex-specific coloration. The presence of dermal bones does not by itself identify a mating signal. [D2]

Social behavior

Not established

Not established here

Multiple individuals occur in quarries also containing other sauropod taxa. That association does not demonstrate stable Malawisaurus herds or family relationships. [D2]

Dossier research & sources

Sources and inspection notes for the claims in this profile.

  1. New material of an Early Cretaceous titanosaurid sauropod dinosaur from MalawiPalaeontology; Jacobs, Winkler, Downs & Gomani (1993) · Accessed 2026-10-02Publisher abstract: Malawisaurus combination, anterior and distal caudal distinctions, premaxilla and flattened teeth. · Inspected: abstract
  2. Sauropod dinosaurs from the Early Cretaceous of Malawi, AfricaPalaeontologia Electronica; Gomani (2005) · Accessed 2026-10-02Inspected published paper: taxonomy, quarry inventory, cranial/postcranial anatomy, Mal-204 osteoderm and distinct Karongasaurus. · Inspected: excerpt
  3. The braincase of Malawisaurus dixeyi (Sauropoda: Titanosauria): A 3D reconstruction of the brain endocast and inner earPLOS ONE; Andrzejewski and colleagues (2019) · Accessed 2026-10-02Original text: fused mature braincase Mal-202-1, associated humerus Mal-221, 4.73 tonne circumference regression, CT anatomy and disputed Dinosaur Beds age. · Inspected: page
  4. MalawisaurusNatural History Museum, London · Accessed 2026-10-02Current page inspected through downloaded HTML when the browser extractor failed: 9.0 m unscoped reference, herbivory and Malawi. · Inspected: page

THE STORY IN THE FOSSILS

Meet Malawisaurus.

The museum’s size reference and a limb-based mass model answer different questions. Only the latter links its measurement to a humerus associated with a braincase judged mature. [3]

A blunt premaxilla and flattened teeth helped separate Malawisaurus from other sauropods historically grouped under older names. [1]

A note on scale and time

The dossier identifies the scope of each reference estimate. A mount, an individual fossil and a species-wide adult range are different measurements. Comparison metrics remain unavailable where adult scope has not been established. Unknown does not mean zero.

Sources & editorial notes

Sources support the stated claims and scopes. Refer to the evidence notes for uncertainty.

  1. New material of an Early Cretaceous titanosaurid sauropod dinosaur from MalawiPalaeontology; Jacobs, Winkler, Downs & Gomani (1993) · Accessed 2026-10-02Publisher abstract: Malawisaurus combination, anterior and distal caudal distinctions, premaxilla and flattened teeth. · Inspected: abstract
  2. Sauropod dinosaurs from the Early Cretaceous of Malawi, AfricaPalaeontologia Electronica; Gomani (2005) · Accessed 2026-10-02Inspected published paper: taxonomy, quarry inventory, cranial/postcranial anatomy, Mal-204 osteoderm and distinct Karongasaurus. · Inspected: excerpt
  3. The braincase of Malawisaurus dixeyi (Sauropoda: Titanosauria): A 3D reconstruction of the brain endocast and inner earPLOS ONE; Andrzejewski and colleagues (2019) · Accessed 2026-10-02Original text: fused mature braincase Mal-202-1, associated humerus Mal-221, 4.73 tonne circumference regression, CT anatomy and disputed Dinosaur Beds age. · Inspected: page
  4. MalawisaurusNatural History Museum, London · Accessed 2026-10-02Current page inspected through downloaded HTML when the browser extractor failed: 9.0 m unscoped reference, herbivory and Malawi. · Inspected: page

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