Evidence map›Paper›PMID 41218776›Full record

ArticleProceedings. Biological sciences2025

Early Ordovician sea scorpions from Morocco suggest Cambrian origins and main diversification of Eurypterida.

Peter Van Roy, Jared C Richards, Javier Ortega-Hernández

Abstract read
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In one paragraph

Article in Proceedings. Biological sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. Article
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

3 authors.

Peter Van RoyDepartment of Geology (WE13), Ghent University, 9000 Ghent, Belgium.ORCID 0000-0001-5330-8402
Jared C RichardsMuseum of Comparative Zoology and Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA.
Javier Ortega-HernándezMuseum of Comparative Zoology and Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA.ORCID 0000-0002-6801-7373

Funding

Česká geologická službaMuseum of Comparative Zoology, Harvard University Wetmore Colles FundNSF 2047192
6 · The paper itself

Abstract

Eurypterida were a diverse clade of aquatic euchelicerates that occupied environments ranging from freshwater to fully marine and included several of the largest euarthropods on record. Although a Middle Ordovician megalograptid hitherto represented the oldest evidence of this clade, its phylogenetic position suggested an earlier history for the origin and main diversification within Eurypterida. Here, we report unequivocal eurypterid fragments from the Early Ordovician Fezouata Biota of Morocco, pre-dating the previously oldest record of this group by 12-15 million years. We describe ?

Indexed as

Biological EvolutionFossilsScorpionsAnimalsMoroccoPhylogenyArachnidaCambrian explosionCarcinosomatidaeChelicerataEurypteridaFezouata BiotaGreat Ordovician Biodiversification EventKonservat-LagerstättePterygotidaeTremadocian

Identifiers

PMID41218776
PMCPMC12606246

What Socratic holds

Textmetadata
LicenceCC BY
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 Socratic graph.