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EXHIBIT 34

Sinosauropteryx

Sinosauropteryx

A fuzzy predator with a banded tail and inferred eye mask.

Evidence profile

TWO WAYS TO PICTURE THE PAST

Compare the evidence with the familiar movie image. The illustrations are not to a shared scale.

01 / SCIENTIFIC RECONSTRUCTION

An animal, reconstructed

Sinosauropteryx prima life reconstruction by Fiann M. Smithwick, Robert Nicholls, Innes C. Cuthill, Jakob Vinther. Small long-tailed bipedal theropod with short arms and simple filamentous feathers; banded tail, dark eye stripe and pale underside are evidence-based reconstructions.

The artist identifies this reconstruction as Sinosauropteryx prima. This view illustrates one form within the genus, rather than every species or individual. Fossil-informed anatomy: Small long-tailed bipedal theropod with short arms and simple filamentous feathers; banded tail, dark eye stripe and pale underside are evidence-based reconstructions. Life contours remain reconstructed despite fossil-informed colour pattern. Derivative cropped version credited to the listed scientific authors; Commons uploader Chermundy removed the scale bar. [1] [2] [3]

Sinosauropteryx color (without scale bar).jpg — Fiann M. Smithwick, Robert Nicholls, Innes C. Cuthill, Jakob Vinther. CC BY-SA 4.0. Remote source artwork displayed without additional cropping; Wikimedia supplies any display-size derivative.

Scientific picture served by Wikimedia · internet connection required.

02 / MOVIE-STYLE INTERPRETATION

A cinematic imagination

Original cinematic Sinosauropteryx picture: Cinematic Sinosauropteryx, small fuzzy theropod with long banded tail, short arms, dark eye mask and pale belly; low vegetation and warm open-habitat light.

Cinematic Sinosauropteryx, small fuzzy theropod with long banded tail, short arms, dark eye mask and pale belly; low vegetation and warm open-habitat light. Dramatic lighting, surface detail and scenery are artistic choices. This is an original cinema-inspired picture, rather than a frame from a film or a documented fossil locality.

Original artwork · artistic interpretation.

Scientific view: credited paleoart interpreting fossil evidence, served online by Wikimedia. Movie-style view: Original artistic interpretation. Colors, soft tissues and settings involve reconstruction.

PERIODEarly Cretaceous[1]
DIETCarnivoreEvidence-informed classification [1]
TOTAL LENGTHNot established hereComparable estimate unavailable
FOSSILS FOUNDChina[1]
CompareRead the dossierView the sources

MEET THE ANIMAL

Meet Sinosauropteryx

Sinosauropteryx prima is known from Early Cretaceous rocks in northeastern China. Additional material described from western Liaoning helped researchers compare finds from different localities. That study highlighted short forelimbs relative to the hind limbs and a long claw on the first finger. Even small pieces of a skeleton can add information when their identity and geological setting are carefully established. [S1]

This small meat-eating dinosaur moved on two legs and had a long tail. Its most striking feature was a covering of short, feather-like filaments preserved around the body. These were simple structures, quite different from the broad flight feathers of a modern bird's wing. The fossils made Sinosauropteryx an important example in research on dinosaur coverings. [D3]

Feather-like coverings did not make this animal a flyer. Its short arms and ground-living body differed from wings built for flight. Sinosauropteryx helps separate two ideas: a dinosaur could have a feather-like covering without flying, and those fossilized structures can reveal an appearance that bare bones leave hidden. [D3]

Overview sources
  1. New Material of Sinosauropteryx (Theropoda: Compsognathidae) from Western Liaoning, ChinaActa Geologica Sinica, English Edition; Ji and Gao (2007) · Accessed 2026-10-04Inspected: abstract

PREHISTORIC ANIMAL DOSSIER

A life in profile.

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

Sinosauropteryx was a small feathered theropod from Early Cretaceous China. Preserved food remains and pigment patterns offer evidence beyond bones, including animal meals and probable camouflage.

Profile scope: Genus: Sinosauropteryx; inspected museum anatomy includes S. prima; color interpretations refer to studied specimens.

Time
Early Cretaceous
Fossil locations in this exhibit
China
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 1.1 m; museum reference

NHM provides a rounded genus reference without a specified specimen or life stage. [D1]

Body mass

Not established

Not established here

The reviewed sources do not establish a numerical body-mass estimate for this record.

Diet

Source supported

Small animals; lizard meal preserved

NHM reports a lizard preserved in a specimen's stomach and mammal remains in another attributed specimen. Consumption evidence does not establish the complete diet of every species. [D1]

Habitat & fossil setting

Inferred

Open areas within the Jehol landscape inferred

Researchers compare the pattern of countershading to living animals and infer relatively open habitat. This specimen-based inference complements a regional ecosystem containing trees; it is not proof of treeless conditions everywhere. [D2]

Movement

Source supported

Bipedal; long tail used for balance

The Australian Museum describes S. prima running on its hindlegs with a balancing tail. Exact speed is not established here. [D3]

Distinctive anatomy

Source supported

Filamentous feathers; striped tail; countershaded body

Fossils preserve feather-like filaments and pigment distribution. Their interpretation as camouflage involves comparison with living animals. [D1] [D2]

Reproduction & life together

Reproduction & nesting

Not established

Not established here

The reviewed sources do not establish taxon-specific nest structure, clutch size or parental care.

Courtship & mating

Not established

Not established here

The reviewed sources do not establish a mating ritual, pair bond or breeding season for this taxon.

Social behavior

Not established

Not established here

The reviewed sources do not establish a taxon-specific group structure or social hierarchy.

Dossier research & sources

Sources and inspection notes for the claims in this profile.

  1. Sinosauropteryx — Dino DirectoryNatural History Museum, London · Accessed 2026-10-02Museum genus reference; life stage and specimen not specified. · Inspected: page
  2. Bandit-masked feathered dinosaur hid from predators using multiple types of camouflageUniversity of Bristol · Accessed 2026-10-02Researchers' account of specimen pigment distribution, camouflage and open-habitat inference. · Inspected: page
  3. Dinosaurs — Sinosauropteryx primaAustralian Museum · Accessed 2026-10-02Species S. prima morphology and locomotion. · Inspected: page

THE STORY IN THE FOSSILS

Meet Sinosauropteryx.

Thin, hairlike feathers covered Sinosauropteryx, making it an important discovery in the study of dinosaur plumage. It lived in what is now northern China. A lizard preserved inside one specimen supplies direct evidence that this small dinosaur ate other vertebrates. [1]

Mapping dark pigment traces revealed a banded tail, dark eye stripe and a darker back above a pale belly. Researchers compared this countershading with living animals and models. Their results suggested camouflage suited to more open habitats, showing how color evidence can inform ecological interpretation. [2]

A note on scale and time

We have not established a comparable adult total-length estimate for this taxon in this draft. Specimen measurements in the text describe those individuals. The cited dates are approximately 125–122 million years ago. The NHM catalogue gives approximately 125–122 Ma; the cited Bristol research report uses approximately 130 Ma. These museum and university summaries differ in their approximate dating. Unknown does not mean zero.

Sources & editorial notes

Sources and evidence notes for this exhibit.

  1. Sinosauropteryx — Dino DirectoryNatural History Museum, London · Accessed 2026-10-02Profile; What did Sinosauropteryx eat?; Where did Sinosauropteryx live?; What colour was Sinosauropteryx?; Taxonomic details. 1.1 m lacks adult scope; some stomach-content specimen identifications are tentative.
  2. Bandit-masked feathered dinosaur hid from predators using multiple types of camouflageUniversity of Bristol · Accessed 2026-10-0226 October 2017 report, reconstructed pigment distribution, eye mask, striped tail, countershading and open-habitat inference. Report’s historical 130 Ma date is not adopted over NHM profile.
  3. Dinosaurs — Sinosauropteryx primaAustralian Museum · Accessed 2026-10-02Identification, Fossils description and Evolutionary relationships, updated 30 June 2026: short three-fingered arms, long legs, bony balancing tail, sharp teeth and hairlike feathers. Anatomy describes S. prima; habitat and diet suggestions remain interpretations.

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