Urokodia sheds light on the origin of chelicerae and book gills of Chelicerata.

Yu Liu, Lorenzo Lustri, Huijuan Mai, Mark Williams, Liming Liu, Yani Tang, Thomas H P Harvey, Xianguang Hou

Abstract read

In one paragraph

Article in Nature, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Yu Liu *Yunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, China. yu.liu@ynu.edu.cn.ORCID http://orcid.org/0000-0002-2346-740X

Lorenzo Lustri *Yunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, China.

Huijuan MaiYunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, China.

Mark WilliamsMEC International Joint Laboratory for Palaeobiology and Palaeoenvironment, Institute of Palaeontology, Yunnan University, Kunming, China.ORCID http://orcid.org/0000-0002-7987-6069

Liming LiuYunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, China.

Yani TangYunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, China.

Thomas H P HarveyMEC International Joint Laboratory for Palaeobiology and Palaeoenvironment, Institute of Palaeontology, Yunnan University, Kunming, China.

Xianguang HouYunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming, China. xghou@ynu.edu.cn.ORCID http://orcid.org/0000-0003-0634-2100

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chelicerates are a diverse group of terrestrial and aquatic arthropods, yet their origin and early evolution remain debated

Indexed as

ArthropodsBiological EvolutionFossilsAnimalsChinaExtremitiesGillsHeadPhylogenyX-Ray Microtomography

Identifiers

PMID42386960

DOI10.1038/s41586-026-10713-2

What OpenQuestion holds

Textmetadata

Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.