{"public_id":"CTF-PAL-000001","vault":"PAL","record_type":"fossil-specimen","record_type_label":"Fossil specimen","title":"Parasaurolophus walkeri holotype, ROM 768","summary":"The type specimen of the crested hadrosaur, a near-complete skeleton from the Dinosaur Park Formation of Alberta.","description":"The holotype skeleton was collected in 1920 by a University of Toronto party and described by William Parks in 1922. The long tubular crest houses looping nasal passages. The specimen is the anatomical basis for every later reconstruction of the animal's voice in this archive.","evidence_tier":"T1","verification_status":"expert","time":{"start":-76500000,"end":-74000000,"precision":"geological-stage","uncertainty_years":1000000,"dating_method":"biostratigraphy","geological_interval":"campanian","bands":["deep"]},"geometry_public":{"type":"region","region_id":"southern-alberta","centroid":[-111.5,50.8]},"precision_class":"region","sensitivity_class":"restricted","sensitivity_reason":"looting-risk","locality_public":"Dinosaur Park Formation, southern Alberta, Canada","place":{"id":"dinosaur-provincial-park","name":"Dinosaur Provincial Park","type":"fossil-locality"},"region":{"id":"southern-alberta","name":"Southern Alberta badlands","geojson_path":"/generated/regions/southern-alberta.geojson"},"taxon":{"id":"parasaurolophus-walkeri","name":"Parasaurolophus walkeri","common":"Parasaurolophus","extant":false,"gbif_key":4967371},"rights":{"licence":"CC-BY-4.0","licence_label":"CC BY 4.0","licence_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Royal Ontario Museum collections record (illustrative placeholder)","rights_holder":"Royal Ontario Museum","source_name":"Royal Ontario Museum","source_url":"https://collections.rom.on.ca/","retrieved_on":"2026-09-01","mode":"link-out","citation":"Parks, W. A. (1922). Parasaurolophus walkeri, a new genus and species of crested trachodont dinosaur. University of Toronto Studies, Geological Series 13."},"media":[{"role":"model","path":"https://sketchfab.com/models/placeholder/embed","media_type":"text/html","alt":"Embedded 3D model of a Parasaurolophus skull from the holding museum.","processing_state":"raw"}],"links":[{"to":"CTF-PAL-000002","to_title":"Parasaurolophus crest resonance, reconstructed call","to_vault":"PAL","to_tier":"T4","type":"reconstruction-of","label":"Reconstructed as","tier":"T4","note":"The call is modelled from the crest airways of this specimen and its relatives.","citation":"Diegert, C. F. and Williamson, T. E. (1998). A digital acoustic model of the lambeosaurine hadrosaur Parasaurolophus tubicen. Journal of Vertebrate Paleontology 18(3).","direction":"in","to_time":{"start":-76500000,"end":-74000000}},{"to":"CTF-END-000001","to_title":"Capercaillie display call, Cairngorms","to_vault":"END","to_tier":"T1","type":"living-relative","label":"Living relative","tier":"T3","note":"Birds are the living descendants of theropod dinosaurs; hadrosaurs are a more distant branch. The link illustrates deep-time kinship rather than direct descent.","citation":"Brusatte, S. L. et al. (2015). The origin and diversification of birds. Current Biology 25(19).","direction":"out","to_time":{"start":2019,"end":2019}}],"vault_fields":{"specimen_number":"ROM 768","completeness":"near-complete skeleton"},"paleo":{"30":[-105.863,51.94],"75":[-87.559,55.678],"150":[-49.215,41.608],"200":[-40.131,32.383],"300":[-37.612,23.624]},"registry":{"registered_on":"2026-09-01","version":"741809bf6934","url":"https://chronos-terra.example.org/records/CTF-PAL-000001","json_url":"https://chronos-terra.example.org/generated/records/CTF-PAL-000001.json"}}