{"id":"W6903149016","doi":"10.1016/j.palwor.2025.200995","title":"The earliest sponge spicule tufts from the Cambrian Lower Yanjiahe Formation, Three Gorges area, South China","year":2025,"lang":"en","type":"article","venue":"Palaeoworld","topic":"Paleontology and Stratigraphy of Fossils","field":"Earth and Planetary Sciences","cited_by":1,"is_retracted":false,"has_abstract":false,"ca_institutions":"","funders":"National Natural Science Foundation of China; Ministry of Natural Resources of the People's Republic of China; Ministry of Natural Resources","keywords":"Sponge spicule; Spicule; Sponge; Biomineralization; Body plan; Taphonomy; Three gorges","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001954832,0.0003648261,0.0003093392,0.002392259,0.001451235,0.0004445507,0.0002903172,0.0002052704,0.001826823],"category_scores_gemma":[0.0002466299,0.0002831533,0.0002181039,0.002453187,0.0008528405,0.0003213648,0.0007936754,0.0001867988,0.0002107681],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000908972,"about_ca_system_score_gemma":0.0009431613,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.1083021,"about_ca_topic_score_gemma":0.3460145,"domain_scores_codex":[0.9999192,0.000008352163,0.000009546558,0.00001911945,0.00001647194,0.00002737446],"domain_scores_gemma":[0.9998643,0.0000181846,0.00003860721,0.00001025953,0.00003074127,0.00003782954],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0004108306,0.00003831759,0.9191212,0.0002912977,0.0001149257,0.001383554,0.01677506,0.0002511107,0.03380862,0.0004025562,0.0003154991,0.02708702],"study_design_scores_gemma":[0.000003405658,0.00001695144,0.9973499,0.00001121774,0.00001393391,0.0001305695,0.001368685,0.00005859259,0.0002390998,0.00001327593,0.0007919114,0.000002403543],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9989581,0.0001675319,0.0000549128,0.00000992237,0.000001511757,0.00000616272,0.0001052011,0.000002296964,0.0006942969],"genre_scores_gemma":[0.9987941,0.000123675,0.0001263912,0.000009659168,0.00000177826,0.000007282103,0.0002221999,0.000002684043,0.0007121573],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.1083021,"threshold_uncertainty_score":0.2153434,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01016379899717922,"score_gpt":0.1960724259012207,"score_spread":0.1859086269040415,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}