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The collection/Cryolophosaurus

EXHIBIT 22

Cryolophosaurus

Cryolophosaurus ellioti

Cryolophosaurus had a fluted crest running across the top of its skull.

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

Cryolophosaurus ellioti life reconstruction by Leoomas. Large bipedal theropod with a distinctive transverse, fluted crest above the eye region.

The artist identifies this reconstruction as Cryolophosaurus ellioti. Fossil-informed anatomy: Large bipedal theropod with a distinctive transverse, fluted crest above the eye region. Much of the body is inferred from relatives; soft tissues and coloration are interpretive. Phylogenetic placement is debated, so the source description of a close relationship to Dilophosaurus should not be treated as settled. [1] [2] [3] [4]

Cryolophosaurus ellioti 2022 Reconstruction.png — Leoomas. 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 Cryolophosaurus picture: Cinematic Cryolophosaurus ellioti with a curved transverse head crest and balanced theropod body; reconstruct the incomplete snout and use artistic colors.

Cinematic Cryolophosaurus ellioti with a curved transverse head crest and balanced theropod body; reconstruct the incomplete snout and use artistic colors. 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 Jurassic[1]
DIETCarnivoreInferred from related anatomy [1]
TOTAL LENGTHNot established hereComparable estimate unavailable
FOSSILS FOUNDAntarctica[1]
CompareRead the dossierView the sources

MEET THE ANIMAL

Meet Cryolophosaurus

Cryolophosaurus ellioti was a large predatory dinosaur from Early Jurassic Antarctica. Its fossils occur in the Hanson Formation of the Central Transantarctic Mountains. A bony crest on its skull gives it a recognizable profile. Anatomical research identifies bones near the eyes as major contributors to that crest, showing that it is a preserved skull structure rather than an invented decoration. [S1]

The animal's setting was very different from Antarctica's modern icy landscape. The museum exhibition reconstructs a vegetated environment with trees and other animals. This helps explain how a large land predator could live there. The reconstruction combines fossil and environmental evidence; it should not be read as a record of one exclusive habitat or a photograph of an individual dinosaur's daily life. [D2]

Researchers study the rest of the skull and skeleton to compare Cryolophosaurus with other early predatory dinosaurs. The anatomical work tests relationships using many features, including less conspicuous bones as well as the famous crest. A distinctive head shape can be useful for identification without revealing its exact purpose. The reviewed evidence does not establish a particular crest display, courtship routine, nest arrangement or parental care for this species. [S1]

Overview sources
  1. Osteology of Cryolophosaurus ellioti from the Early Jurassic of Antarctica and implications for early theropod evolutionZoological Journal of the Linnean Society; Oxford University Press · Accessed 2026-10-04Inspected: abstract

PREHISTORIC ANIMAL DOSSIER

A life in profile.

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

Cryolophosaurus ellioti was a crested Antarctic theropod from the Jurassic. Its fossils record a predator in Antarctica's vegetated past, rather than the modern ice-covered landscape.

Profile scope: Species: Cryolophosaurus ellioti.

Time
Early Jurassic
Fossil locations in this exhibit
Antarctica
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 8 m; museum reference

NHM gives 8 m; the LA exhibition uses a 25-foot reconstruction, approximately 7.6 m. These educational reconstructions are not a measured biological range. [D1] [D2]

Body mass

Inferred

About 500 kg; museum estimate

NHM provides a rounded reference figure without identifying a specimen, life stage or calculation method. [D1]

Diet

Source supported

Carnivore; other animals

NHM describes sharp pointed teeth and a diet of other animals. Specific prey species are not established by these sources. [D1]

Habitat & fossil setting

Inferred

Vegetated ancient Antarctica

The exhibition places Cryolophosaurus in a lush Antarctic environment with trees and other vertebrates. That ecosystem reconstruction does not identify a narrow habitat preference. [D2]

Movement

Source supported

Walked on two legs

NHM identifies two-legged movement; speed and hunting technique remain unspecified here. [D1]

Distinctive anatomy

Source supported

Curved cranial crest; pointed teeth

A bony crest on the skull is a documented feature. Its existence does not by itself demonstrate a mating display. [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. Cryolophosaurus — Dino DirectoryNatural History Museum, London · Accessed 2026-10-02Museum genus reference; life stage and specimen not specified. · Inspected: page
  2. Antarctic DinosaursNatural History Museum of Los Angeles County / Field Museum · Accessed 2026-10-02Exhibition reconstruction, named species and ancient Antarctic environment. · Inspected: page
  3. CryolophosaurusField Museum · Accessed 2026-10-02Type specimen PR 1821; C. ellioti spelling and collection identity. · Inspected: excerpt

THE STORY IN THE FOSSILS

Meet Cryolophosaurus.

Cryolophosaurus comes from Antarctica’s Hanson Formation in the Central Transantarctic Mountains. Its unusual skull crest was formed primarily by the lacrimal bones. A 2007 anatomical analysis compared hundreds of skeletal characters, highlighting a mixture of features informative about relationships among early predatory dinosaurs. [1]

David Elliot encountered the fossils while studying Antarctic rocks, and subsequent work freed the skeleton over multiple field seasons. The recovered skull was incomplete, with part of the snout worn away. Suggested crest functions involve recognition or display, but the fossil does not establish these behaviors. [2] [3]

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. A numerical age interval has not been reviewed here. Unknown does not mean zero.

Sources & editorial notes

Sources and evidence notes for this exhibit.

  1. Osteology of Cryolophosaurus ellioti and implications for early theropod evolutionUniversity of Minnesota / Zoological Journal of the Linnean Society · Accessed 2026-10-022007 original-paper abstract, lines 15–20: Hanson Formation, diagnostic lacrimal crest, anatomical character analysis and early-theropod affinities. Main article not fully available here.
  2. A dinosaur for OrtonOhio State University · Accessed 2026-10-02University museum account, discovery and crest interpretation, lines 158–177. Mounted reconstruction length is not an adult biological measurement.
  3. A dinosaur cast in stoneOhio State University · Accessed 2026-10-02Researcher account, discovery and missing snout, lines 35–48. Geological sequence dated broadly; no precise taxon age adopted.
  4. The skull of Monolophosaurus jiangi and its implications for early theropod phylogenyUniversity of Edinburgh / Zoological Journal of the Linnean Society · Accessed 2026-10-02Indexed text of Brusatte et al. (2010) original comparative cranial paper, lacrimal section page 24: Cryolophosaurus transverse fluted crest citing Smith et al. (2007).

FOLLOW YOUR CURIOSITY

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