CUBROID Dinosaur Island — model attribution =========================================== These three model GLBs are licensed under Creative Commons Attribution 4.0 International. https://creativecommons.org/licenses/by/4.0/ Redistributed derivative source: Prehistoric Animal Museum https://github.com/s010s/prehistoric-animal-museum/tree/4ca0e1c491183cf0d73c1456cc2041b59934e19b Its model GLBs and project modifications retain their recorded CC BY 4.0 terms; see LICENSING.md section 5 and individual model license/source records. No museum code, editorial text, narration or background artwork is included. CUBROID changes (2026-09-05): offline meshopt decoding; normalized-accessor expansion to floats for Three.js r128 CPU skin helpers; pruning unsupported specular extensions and unused texture data; grounded unit length and forward orientation; scene scale, positions and animation playback speed. The original texture pixels, mesh topology, rigs and Idle motion are preserved. Model license record ==================== Asset: Tyrant King - Tyrannosaurus Creator: Marcel Schanz License: Creative Commons Attribution 4.0 International (CC BY 4.0) License URL: https://creativecommons.org/licenses/by/4.0/ Source URL: https://sketchfab.com/3d-models/tyrant-king-tyrannosaurus-6465a297fa784598adc49f6e0042d449 Accessed: 2026-07-28 Attribution: “Tyrant King - Tyrannosaurus” by Marcel Schanz, CC BY 4.0; modified for the Prehistoric Animal Museum. Project changes include normalization, a project-authored Body base-colour midtone lift, a 13-bone Blender armature, deterministic skin weights with repaired foreclaw membership, integrated lower-jaw skin and mouth-lining weights, matched hip seam rings with upper-leg blending, and an eight-second in-place Idle with visible head, arm, tail, and controlled lower-jaw biting motion. The source title is retained verbatim for attribution; the project-facing animal name is “霸王龙”. Full derivative provenance: # Sketchfab round-two replacement credits These files are ignored local-review inputs. They are not approved production assets and must not be published merely because they appear in the review catalog. Both selected sources use [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/). That license permits sharing and adaptation, including commercial use, provided the creator and source are credited, the license is linked, and changes are identified. ## Tyrannosaurus rex - Creator: [Marcel Schanz](https://sketchfab.com/mschanz) - Source: [Tyrant King - Tyrannosaurus](https://sketchfab.com/3d-models/tyrant-king-tyrannosaurus-6465a297fa784598adc49f6e0042d449) - License: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) - Changes: downloaded as Sketchfab's converted GLB with 1k textures; PBR material data converted where necessary; unused data deduplicated and pruned; GLB repacked; Body base-colour midtones lifted with a 0.80 luminance gamma and maximum 1.50 channel scale after a second owner review while other PBR textures remained unchanged; a project-authored 13-bone armature and deterministic skin weights added in Blender; an eight-second in-place Idle authored with head, arm, tail, and lower-jaw motion; lower-jaw membership separated from the upper palate after close-up review; the integrated outer lower-jaw skin and shared mouth lining were reweighted with smooth hinge and mouth-edge transitions so the lower-jaw skin, teeth, and tongue follow the lower jaw while upper teeth and palate follow the head. Both 33-vertex hip seam rings were matched to the torso weights, then each upper leg was blended back to its stationary leg bone over 0.16 model units so the hips remain closed while the feet stay planted. Both detached fingernail components on each forelimb were reassigned to the corresponding arm bone. The added opening remains limited to about 4 degrees and follows one primary and one smaller secondary opening-and-closing pulse; normalized to ten rotation-only channels and validator-checked. Attribution: “Tyrant King - Tyrannosaurus” by Marcel Schanz, licensed under CC BY 4.0; converted by Sketchfab, normalized, and given a project-authored Body base-colour midtone lift, Blender rig, repaired weights, and museum Idle by the Prehistoric Animal Museum project. ## Triceratops - Creator: [wojciechmiedziocha](https://sketchfab.com/wojciechmiedziocha) - Source: [Triceratops dinosaur](https://sketchfab.com/3d-models/triceratops-dinosaur-87527079bad44917ab1b98a456b46c7e) - License: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) - Changes: downloaded as Sketchfab's converted GLB with 1k textures; unused data deduplicated and pruned; GLB repacked; a project-authored 10-bone armature and deterministic skin weights added in Blender; an eight-second in-place head-and-tail Idle authored with the pelvis/tail-root overlap held stationary, normalized to four rotation-only channels, and validator-checked. Attribution: “Triceratops dinosaur” by wojciechmiedziocha, licensed under CC BY 4.0; converted by Sketchfab, normalized, rigged, weighted, and given an in-place museum Idle by the Prehistoric Animal Museum project. Model license record ==================== Asset: Apatosaurus Creator: toro ardido modelos 3d License: Creative Commons Attribution 4.0 International (CC BY 4.0) License URL: https://creativecommons.org/licenses/by/4.0/ Source URL: https://sketchfab.com/3d-models/apatosaurus-fecabec8e4ef42ef98b5480dbf50c57d Accessed: 2026-08-04 Rights confirmed by product owner: 2026-08-05 Attribution: “Apatosaurus” by toro ardido modelos 3d, CC BY 4.0; modified for the Prehistoric Animal Museum. Project changes include removing the source rig and inert animation, welding exactly coincident vertices while preserving UV corners, retaining the accepted source base colour, authoring new ORM and tangent-space normal maps, normalizing scale and ground contact, creating an eight-second in-place morph-target Idle, validating deformation safety, and applying browser-delivery compression. The project-facing animal name is “迷惑龙”. Full derivative provenance: Model source record =================== - Downloaded: 2026-08-04 - Source title: Apatosaurus - Creator: toro ardido modelos 3d - Source URL: https://sketchfab.com/3d-models/apatosaurus-fecabec8e4ef42ef98b5480dbf50c57d - License shown by source page: Creative Commons Attribution 4.0 International - License URL: https://creativecommons.org/licenses/by/4.0/ - Rights confirmation: on 2026-08-05 the product owner confirmed that the source publisher holds the required source rights and authorized public promotion of the reviewed derivative. - Preserved source archive size: 10,558,696 bytes - Preserved source archive SHA-256: 0c87a0892d859b42693c3558b8194047f4003fb164235154199ad9bdd5c07eb1 The source archive is retained unchanged in the private intake area. The tracked runtime derivative preserves attribution and records all project modifications in the package provenance. Model license record ==================== Asset: PBR Stegasaurus (Animated) Creator: Ferocious Industries License: Creative Commons Attribution 4.0 International (CC BY 4.0) License URL: https://creativecommons.org/licenses/by/4.0/ Source URL: https://sketchfab.com/3d-models/pbr-stegasaurus-animated-ec254ea1554941fe8a131f62db0faf3d Accessed: 2026-07-26 Attribution: “PBR Stegasaurus (Animated)” by Ferocious Industries, CC BY 4.0; modified for the Prehistoric Animal Museum. The source title is retained verbatim for attribution. The project-facing animal name is corrected to “Stegosaurus”. Full derivative provenance: Model source and modification record ==================================== Sketchfab source UID: ec254ea1554941fe8a131f62db0faf3d Download method: authenticated Sketchfab web download, converted GLB with 1K textures Downloaded source bytes: 8026408 Downloaded source SHA-256: 611aa55ad61025a5ec6391081f70bb916e60909b73361e5919f73acfa9012d75 Runtime derivative bytes: 6819152 Runtime derivative SHA-256: 514e673525173134279604efe592e9c5079e916e8e2be0d729701bbb650adae1 Modifications: - converted KHR_materials_pbrSpecularGlossiness materials to metallic/roughness; - cleared joint indices whose corresponding skin weight was zero; - retained IdleA only and renamed it Idle; - deduplicated, pruned, repacked, and validated the derivative; - corrected the project-facing taxon spelling to Stegosaurus. Recorded engineering measurements: - 19,839 triangles; - three meshes and two materials; - six embedded 1K textures; - one retained animation named Idle; - zero normalized validator errors. Attribution 4.0 International ======================================================================= Creative Commons Corporation ("Creative Commons") is not a law firm and does not provide legal services or legal advice. Distribution of Creative Commons public licenses does not create a lawyer-client or other relationship. Creative Commons makes its licenses and related information available on an "as-is" basis. Creative Commons gives no warranties regarding its licenses, any material licensed under their terms and conditions, or any related information. Creative Commons disclaims all liability for damages resulting from their use to the fullest extent possible. 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