The first record of a shortnose chimaera-like egg capsule from the Mesozoic (Late Jurassic, Switzerland).

Yang Zhao, Jordan Bestwick, Jan Fischer, Dylan Bastiaans, Merle Greif, Christian Klug

Abstract read

In one paragraph

Article in Swiss journal of palaeontology, 2025. 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

6 authors.

Yang ZhaoDepartment of Palaeontology, University of Zurich, 8006 Zurich, Switzerland.

Jordan BestwickDepartment of Palaeontology, University of Zurich, 8006 Zurich, Switzerland.

Jan FischerUrweltmuseum GEOSKOP, Burg Lichtenberg (Pfalz), 66871 Thallichtenberg, Germany.

Dylan BastiaansDepartment of Palaeontology, University of Zurich, 8006 Zurich, Switzerland.

Merle GreifDepartment of Palaeontology, University of Zurich, 8006 Zurich, Switzerland.

Christian KlugDepartment of Palaeontology, University of Zurich, 8006 Zurich, Switzerland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chondrichthyan egg capsules, fossil and recent, have a taxonomical significance that can provide important insights into the occurrence and reproductive strategy of their producers. However, the rare occurrence of fossil capsules and their sometimes difficult identification hinder our understanding of their systematics and significance. Supplementary Information: The online version contains supplementary material available at 10.1186/s13358-025-00352-x.

Indexed as

ChimaeridaeEgg capsuleHolocephaliLaffoniaLate JurassicPseudocaudina

Identifiers

PMID39967761

DOI10.1186/s13358-025-00352-x

PMCPMC11830639

What OpenQuestion holds

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Registered trials

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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.