Size reference
Source supported13.2–14.1 mm adult-female bodies
Range of described C. elegans adults in the original sample; not the genus or juvenile range. [D1]
EXHIBIT 245
Caputoraptor
Caputoraptor
Prehistoric insect
Caputoraptor was a Cretaceous insect with a scissor-like device between its head and thorax; the device’s purpose remains debated. [2]
TWO WAYS TO PICTURE THE PAST
Science & the silver screen
Compare the evidence with the familiar movie image. The illustrations are not to a shared scale.
01 / SOURCE-INFORMED RECONSTRUCTION
A life reconstruction from the evidence
Image unavailableIllustrative life reconstruction of Caputoraptor in a period-appropriate environment; coloration and missing anatomy are interpretations.The exhibit and its credited image source remain available.
An illustrative reconstruction. Compare its anatomy with the evidence and limitations in the dossier. [1]
Source-informed reconstruction. Appearance evidence [1]. Original illustration; missing anatomy, coloration and scenery include interpretation.
Fossils constrain this life reconstruction. Missing anatomy, coloration and the environmental scene include interpretation; the dossier explains the evidence limits.
02 / MOVIE-STYLE INTERPRETATION
A cinematic imagination
Image unavailableIllustrative living reconstruction of Caputoraptor; missing anatomy and exact colors remain uncertain.The exhibit and its credited image source remain available.
An illustrative reconstruction. Compare its anatomy with the evidence and limitations in the dossier. Lighting, coloration and scenery are artistic choices. This image does not document a fossil locality or behavior.
Original artwork · artistic interpretation.
Scientific view: source-informed reconstruction, credited paleoart or specimen-based imagery. Movie-style view: Original artistic interpretation. Reconstructions involve uncertainty.
PERIODCretaceous[4]
DIETAnimal feeding inferredEvidence and uncertainty in the dossier
TOTAL LENGTHSee the dossierEstimate scope matters
FOSSILS FOUNDMyanmar, South Korea[4]
MEET THE ANIMAL
Meet Caputoraptor
Caputoraptor had an unusual device where its head met its thorax. Sharp extensions behind the head faced toothed ridges on the thorax, forming a scissor-like arrangement. A Chinese Academy of Sciences report explains that researchers examined nine bodies in eight amber pieces, including three adults and six nymphs. These fossils let them compare more than one life stage, although the sample itself does not prove that the insects lived in groups. [D3]
The scientists first proposed that females might use the device to hold a male during mating. That explanation was a hypothesis, rather than a preserved mating event. A later researcher described a male nymph with a similar apparatus and argued against a female-only mating role. He suggested that the device might instead squeeze prey. The exact use therefore remains uncertain: a structure can be preserved clearly even when its behavior is difficult to reconstruct. [D2]
The original C. elegans adults measured 13.2 to 14.1 millimeters in body length. Their feet and eyes suggested an animal climbing through tree or shrub foliage. Their leg pairs were similar walking limbs, not the huge grasping forelegs of a modern mantis. Adults had developed wings, whereas the nymphs lacked them. These clues help reconstruct its appearance and possible movement without turning a disputed behavioral explanation into a fact. [D1]
PREHISTORIC ANIMAL DOSSIER
A life in profile.
The animal, the evidence, and the questions still open.
Adult females and nymphs preserve a distinctive head–thorax mechanism. A proposed mating function was challenged by a later male nymph. [D2]
Profile scope: Genus — Caputoraptor; galleries use C. elegans adult-female anatomy from Myanmar amber, while other species include Korean material. [D1] [D4]
- Time
- Cretaceous
- Fossil locations in this exhibit
- Myanmar, South Korea
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 mass
Not establishedNot established here
The reviewed male-nymph correspondence supplies no body-mass estimate. [D2]
Diet
InferredAnimal feeding inferred
Head and visual anatomy prompted predation hypotheses; exact prey and feeding method remain uncertain. [D1]
Habitat
InferredTree or shrub foliage inferred
Foot pads and movable head support a climbing foliage-dweller rather than an aquatic animal. [D1]
Movement
InferredWalking and flight inferred
Similar leg pairs and developed adult hindwings support these capabilities; nymphs were wingless. [D1]
Distinctive anatomy
Source supportedHead–thorax scissor apparatus
Rear head edges oppose toothed pronotal ridges. Legs are similar walking limbs, rather than giant mantis arms. [D1]
Reproduction & life together
Reproduction
Source supportedNymphs and adult females documented
These life stages are preserved; reviewed sources do not establish attributable eggs or nesting. [D3]
Courtship
Not establishedNot established here
The original mating-clamp hypothesis was challenged after a male nymph showed the apparatus; prey squeezing is also a hypothesis. [D2]
Social behavior
Not establishedNot established here
Multiple bodies in the research sample do not demonstrate a colony or cooperative behavior. [D3]
Dossier research & sources
Sources and inspection notes for the claims in this profile.
- A New Cretaceous Insect with a Unique Cephalo-thoracic Scissor DeviceCurrent Biology; Bai et al., 2018 · Accessed 2026-10-08Original full author-hosted article inspected, including adult-female13.2–14.1 mm sample, nine individuals, nymphs, walking legs, short forewings, neck edges, terminalia, habitat and expressly hypothetical mechanism functions. · Inspected: page
- The cephalo-thoracic apparatus of Caputoraptor elegans may have been used to squeeze preyCurrent Biology; Kočárek, 2018 · Accessed 2026-10-08Complete original author-hosted correspondence read, including male nymph, nine abdominal coxosternites, challenge to female-only mating-clamp interpretation and alternative prey-squeezing hypothesis. Local reichardlab PDF contains only this article’s first page and is not presented as a complete copy. · Inspected: page
- Discovery of unusual proposed mating behavior in AlienopteraInstitute of Zoology, Chinese Academy of Sciences, 2018 · Accessed 2026-10-08Full original institutional research-team release inspected, including nine bodies/three adults/six nymphs and actual type photograph/reconstruction panel. Its mating illustration represents the original hypothesis, not a fossil mating pair. · Inspected: page
- Jinju cockroachesVršanský et al.; Amba projekty, 2025 · Accessed 2026-10-08Original monograph retained; relevant genus descriptions and isolated C. ganggu hindwing, printed pages68–71 inspected; not the whole book. · Inspected: page
- Caputoraptor genus recordIntegrated Taxonomic Information System, 2025 · Accessed 2026-10-08Institutional valid-genus taxonomy record inspected; no life-history observations supplied. · Inspected: page
THE STORY IN THE FOSSILS
A hypothesis meets a new specimen
Kočárek’s male nymph supplied a way to test the earlier female-clamp proposal. Its matching apparatus challenged that explanation without directly proving the alternative feeding function. [2]
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.
- A New Cretaceous Insect with a Unique Cephalo-thoracic Scissor DeviceCurrent Biology; Bai et al., 2018 · Accessed 2026-10-08Original full author-hosted article inspected, including adult-female13.2–14.1 mm sample, nine individuals, nymphs, walking legs, short forewings, neck edges, terminalia, habitat and expressly hypothetical mechanism functions. · Inspected: page
- The cephalo-thoracic apparatus of Caputoraptor elegans may have been used to squeeze preyCurrent Biology; Kočárek, 2018 · Accessed 2026-10-08Complete original author-hosted correspondence read, including male nymph, nine abdominal coxosternites, challenge to female-only mating-clamp interpretation and alternative prey-squeezing hypothesis. Local reichardlab PDF contains only this article’s first page and is not presented as a complete copy. · Inspected: page
- Discovery of unusual proposed mating behavior in AlienopteraInstitute of Zoology, Chinese Academy of Sciences, 2018 · Accessed 2026-10-08Full original institutional research-team release inspected, including nine bodies/three adults/six nymphs and actual type photograph/reconstruction panel. Its mating illustration represents the original hypothesis, not a fossil mating pair. · Inspected: page
- Jinju cockroachesVršanský et al.; Amba projekty, 2025 · Accessed 2026-10-08Original monograph retained; relevant genus descriptions and isolated C. ganggu hindwing, printed pages68–71 inspected; not the whole book. · Inspected: page
- Caputoraptor genus recordIntegrated Taxonomic Information System, 2025 · Accessed 2026-10-08Institutional valid-genus taxonomy record inspected; no life-history observations supplied. · Inspected: page
KEEP EXPLORING
More from the collection
Image unavailableIllustrative living reconstruction of Alienopterus; missing anatomy and exact colors remain uncertain.The exhibit and its credited image source remain available.
Alienopterus
Alienopterus
Prehistoric insect
Alienopterus combined short forewings, long hindwings and walking legs in a Cretaceous insect related to the roach–mantis lineage.
Animal feeding inferredMeet this animal
Image unavailableIllustrative living reconstruction of Cretophengodes; missing anatomy and exact colors remain uncertain.The exhibit and its credited image source remain available.
Cretophengodes
Cretophengodes
Prehistoric insect
Cretophengodes was a Cretaceous beetle whose preserved abdominal organ supports ancient light production.
Not establishedMeet this animal
Image unavailableIllustrative living reconstruction of Angimordella; missing anatomy and exact colors remain uncertain.The exhibit and its credited image source remain available.
Angimordella
Angimordella
Prehistoric insect
Angimordella was a Cretaceous beetle preserved with pollen; its specialized pollinator role remains uncertain after reassessment.
Not establishedMeet this animal