New Palaeogene sponges from the Red Bluff Tuff, Chatham Island, New Zealand
Why this work is in the frame
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Bibliographic record
Abstract
Abstract A horizon with well‐preserved sponge body fossils occurs in the late Palaeocene–early Eocene Red Bluff Tuff of Chatham Island, located some 850 km east of mainland New Zealand. The body fossils are ‘glass’ and ‘lithistid’ sponges in which most of the original silica has been replaced by calcite during diagenesis, strewn in approximate growth position around the same horizon. We describe two new species, a lyssacinosidan (non‐rigid) glass sponge Rossella cylindrica sp. nov. (Class Hexactinellida, Order Lyssacinosida, Family Rossellidae), significant as it provides only the second species in the fossil record of the genus Rossella , and a very large, foliose, tretodictyid (rigid) glass sponge, Anomochone chathamensis sp. nov. (Class Hexactinellida, Order Hexactinosida, Family Tretodictyidae). A large, nodulose lithistid sponge attributed to the Family Corallistidae, but not identifiable to genus, is also described. This material provides a window into the early Tertiary palaeoenvironment of what is now the southern Pacific Ocean. urn:lsid:zoobank.org:act:C8CEF5C8‐FD21‐4515‐9A7C‐3C6FCE6F3ACE for Anomochone chathamensis urn:lsid:zoobank.org:act:4C2F6456‐2B55‐40EF‐9B06‐26753CE85354 for Rossella cylindrical
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it