EXHIBIT 184
Megaraptor namunhuaiquii
Megaraptor was a Patagonian predator with an enormous claw on its first finger. A juvenile preserves much of the known skull anatomy. [2]
TWO WAYS TO PICTURE THE PAST
Compare the evidence with the familiar movie image. The illustrations are not to a shared scale.
Displayed hand identified as Megaraptor, showing enlarged first and second manual claws. The source supplies no inventory number or fossil-versus-cast documentation; the display illustrates hand anatomy without establishing individual identity, maturity or a complete body. [1]
Displayed Megaraptor hand · raffaele sergi. CC BY 2.0. Converted to WebP and resized proportionally within verified native dimensions; no anatomical edits. Existing Commons crops or figure revisions are retained under the inspected file license.
The photograph or figure shows the credited fossil material; displayed mounts and labels can include interpretation.
Original cinematic interpretation of Megaraptor. The enlarged first hand claw follows fossil evidence; the reconstructed head, soft tissues and full silhouette use comparison with related theropods. Lighting, colors and scenery are artistic choices; this image does not document directly observed behavior. 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.
MEET THE ANIMAL
Megaraptor is famous for a huge curved claw, but that claw belonged to its hand. It was originally mistaken for a foot weapon. A later articulated hand, with its bones still arranged together, corrected the picture. This discovery is a good example of why even an impressive fossil can be misunderstood until more of its surrounding anatomy is found. [D1]
A young specimen from Argentina preserves parts of the skull and predatory teeth. It provides information about a juvenile, rather than a complete adult of maximum size. Reconstructions based on young and larger individuals must keep those growth stages separate. [D2]
Comparisons suggest that its three-fingered hand could grasp, with an especially large first claw. Using that hand to seize prey is a reasonable functional interpretation, but the bones do not show a hunt in progress. The distinction is useful: a skeleton can reveal what an animal was equipped to do without recording exactly how it behaved on every occasion. [D3]
PREHISTORIC ANIMAL DOSSIER
The animal, the evidence, and the questions still open.
The celebrated claw was originally mistaken for a foot weapon. Articulated hand bones corrected that interpretation, while juvenile skull and growth studies provide a separate view of the animal. [D1]
Profile scope: Genus profile centered on M. namunhuaiquii. Named specimens differ in size, maturity and completeness; some later referrals remain conditional. [D4]
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.
About 3 m juvenile; historical 9–10 m type reconstruction
The 2014 study scales juvenile MUCPv 595 from Allosaurus proportions, then quotes the historical 9–10 m estimate for incomplete MCF-PVPH 79 from Novas (1998). These are different individuals and stages, not a species range or measured adult maximum. [D2]
About 1.04 tonnes; conditional specimen model
The 2025 comparison reports 1,036 kg for MUCPv 1353, probably referable to Megaraptor. This is a historical model for a referred individual, not a weighed animal or secure genus maximum. [D4]
Carnivory inferred from skull and teeth
Juvenile MUCPv 595 preserves predatory dentition, including differing premaxillary and posterior tooth shapes. A particular prey species or hunting strategy is not established. [D2]
Turonian–Coniacian Portezuelo deposits
Reviewed specimens come from Neuquén, Argentina. The formation and mixed fossil assemblages provide a depositional setting rather than a precise territorial range. [D2]
Bipedal theropod; grasping hand inferred
Comparative manual anatomy supports a three-fingered grasping apparatus with a disproportionately enlarged first claw. Its proposed use in seizing prey is a functional inference, not observed hunting. [D3]
Giant first-finger claw, not a sickle-shaped foot claw
The articulated MUCPv 341 hand established the manual position of the large ungual. Restoring it as a dromaeosaur-like raised toe would misrepresent this evidence. [D1]
Not established here
Eggshells occur in the mixed Futalognko quarry, but the 2004 account does not identify their producer as Megaraptor. No reviewed clutch or parental behavior is securely assigned. [D1]
Not established here
Focused searches did not establish sexes, mate choice, mating seasons or a particular courtship display. Restored colors and feather arrangements are artistic interpretations.
Not established here
The 2004 quarry contains multiple dinosaur groups and other vertebrates. This association does not demonstrate a Megaraptor hunting pack or family group. [D1]
Sources and inspection notes for the claims in this profile.
THE STORY IN THE FOSSILS
Growth is recorded separately from size: MUCPv 595 was actively growing at about six years, while larger sampled individuals were interpreted as older and possibly mature. None supplies an observed mating history. [2]
Megaraptor’s affinities have been debated, but its distinctive giant hand remains central to recognition. The 2025 comparison retains the genus while qualifying some referred remains. [4]
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 support the stated claims and scopes. Refer to the evidence notes for uncertainty.
KEEP EXPLORING
Spinosaurus
This North African spinosaur combined a narrow snout with a tall back sail. Its relationship with water remains actively debated.
Giganotosaurus
This huge Argentine carnivore belonged to Carcharodontosauridae. Incomplete skeletons make its exact size and prey choices difficult to establish.
Carcharodontosaurus
This giant carnivore lived across North Africa. Its flesh-cutting teeth contrast with the thicker, bone-crushing teeth associated with Tyrannosaurus.
