EXHIBIT 126
Isisaurus colberti
Isisaurus was an Indian titanosaur whose partial skeleton preserves distinctive neck vertebrae, shoulders and forelimbs. [1]
TWO WAYS TO PICTURE THE PAST
Compare the evidence with the familiar movie image. The illustrations are not to a shared scale.
Isisaurus life art informed by published descriptions and comparative skeletal reconstructions. The type lacks a skull, hand and hindlimbs; head shape, complete proportions, posture, skin and colors are interpretive. [1]
Isisaurus colberti life restoration · Ansh Saxena. CC BY-SA 4.0. Resized proportionally and converted to WebP; no anatomical edits. Same source license applies.
Scientific reconstruction is an interpretation; source credit does not certify every anatomical detail.
Original cinematic interpretation of Isisaurus colberti. Colors, soft tissues, scenery and missing anatomy are reconstructed artistic choices; this is not a directly observed individual or behavior. The type lacks skull, hindlimbs and hands; those details and the complete posture are comparative restorations. 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
Isisaurus was a plant-eating sauropod from Late Cretaceous India. Plant eating describes a broad feeding role. The reviewed evidence does not establish its preferred plants, how much it ate or its daily feeding routines. [D6]
The original description dealt with associated body bones and distinctive skeletal anatomy. Associated remains are especially useful because researchers can compare connected evidence from one discovery, instead of assuming that every regional sauropod bone belongs to the same dinosaur. A partial body still requires restoration when shown as a complete animal, and preserved parts do not automatically supply missing head or limb details. [D2]
Fossil dung, called coprolites, has been provisionally attributed to Isisaurus. Leaf-associated fungi in those remains are intriguing dietary clues, but the animal that produced them was uncertain, and later fungal growth is also a possibility. The contents cannot become a confirmed genus-specific menu. Keeping the proposed producer visible preserves an interesting finding without making the identification or feeding story more certain than the study allows. [D3]
PREHISTORIC ANIMAL DOSSIER
The animal, the evidence, and the questions still open.
The original associated skeleton includes vertebrae, girdles and forelimb material. Missing head and hindlimb evidence limit confident whole-body reconstruction. [D2]
Profile scope: Genus profile centered on Isisaurus colberti and associated type ISI R335/1–65. Unassociated braincases are not automatically part of that skeleton. [D1]
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 18 m; historical compiled reference
The 2023 review repeats Montague’s reference based on the type specimen. Montague compiled internet databases; a transparent whole-body reconstruction and maturity assessment were not obtained here. [D4] [D5]
About 14 tonnes; historical compiled reference
This is the same secondary numerical reference repeated in the primary review, not a newly validated volume or limb-circumference model. Its uncertainty and individual maturity are unspecified. [D4] [D5]
Plants; coprolite producer uncertain
The museum identifies herbivory. Leaf-associated fungi occur in coprolites provisionally attributed to Isisaurus; their producer is uncertain, so they cannot establish a confirmed genus-specific menu. [D6] [D3]
Maastrichtian Lameta deposits, central India
The associated type comes from Dongargaon Hill, Maharashtra, in infratrappean Lameta deposits. This profile centers on that documented material rather than transferring every regional titanosaur referral. [D1]
Four-legged reconstruction; missing parts matter
Forelimb and girdle anatomy support a quadrupedal sauropod reconstruction. The type lacks its radius, hand and hindlimbs, so exact foot form, complete stance and speed remain untested. [D1]
Distinctive cervical vertebrae and robust ulna
Neck vertebrae, broad caudal neural spines and a robust ulna characterize the type. Its absent skull cannot be reconstructed confidently from the unassociated Dongargaon braincase alone. [D1]
Not established here
A thermometry study tentatively assigns regional eggshells to Isisaurus through stratigraphic association, without an embryo or hatchling linking the producer. That proposal does not securely establish genus-specific clutch size, incubation or parental care. [D7]
Not established here
No reviewed genus-specific evidence establishes displays, mate choice, vocalizations or sexual dimorphism. Giraffe comparisons cannot demonstrate courtship in Isisaurus.
Not established here
The partial type skeleton represents one individual. Regional occurrences do not resolve persistent herds, hierarchy or family relationships. [D1]
Sources and inspection notes for the claims in this profile.
THE STORY IN THE FOSSILS
The animal first described as Titanosaurus colberti was assigned its own genus in the 2003 revision. Its former species combination belongs to this profile, while Titanosaurus remains a separate taxonomic question. [1]
The coprolites are intriguing dietary evidence, but their authors described the Isisaurus attribution as provisional. That uncertainty remains attached to the leaf-fungus interpretation. [3]
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
Rapetosaurus krausei
Rapetosaurus was a Malagasy titanosaur. Its famous Field Museum skeleton belonged to a growing youngster.
Malawisaurus dixeyi
Malawisaurus was a plant-eating titanosaur from Malawi, known from skull elements, vertebrae, limb bones and dermal armor.
Argentinosaurus huinculensis
Argentinosaurus huinculensis was an enormous Late Cretaceous plant-eating titanosaur from Argentina. Its fragmentary remains reveal great scale while leaving its complete proportions uncertain.
