Evidence map›Paper›PMID 28626610›Full record

ArticlePeerJ2017

Tiny pollen grains: first evidence of Saururaceae from the Late Cretaceous of western North America.

Friðgeir Grímsson, Guido W Grimm, Reinhard Zetter

Open access · goldAbstract read
In one paragraph

Article in PeerJ, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
3.2field-weighted citation impact, top 8% of its field
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

7 citing papers in PubMed, 17 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Ecology and evolution · 2021
    Article
  6. Article
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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 at 1 institution in 1 country.

Friðgeir GrímssonDepartment of Palaeontology, University of Vienna, Vienna, Austria.
Guido W GrimmDepartment of Palaeontology, University of Vienna, Vienna, Austria.
Reinhard ZetterDepartment of Palaeontology, University of Vienna, Vienna, Austria.
University of Vienna · AT

Funding

Austrian Science Fund FWF M 1751Austrian Science Fund FWF P 24427
6 · The paper itself

Abstract

backgroundThe Saururaceae, a very small family of Piperales comprising only six species in four genera, have a relatively scanty fossil record outside of Europe. The phylogenetic relationships of the four genera to each other are resolved, with the type genus

methodsDispersed fossil pollen grains from the Campanian (82-81 Ma) of North America are compared to dispersed pollen grains from the Eocene strata containing

resultsThe unambiguous fossil record of the Saururaceae is pushed back into the Campanian (82-81 Ma). Comparison with re-investigated pollen from the Eocene of North America, the Miocene of Europe, and modern species of the family shows that pollen morphology in Saururaceae is highly conservative, and remained largely unchanged for the last 80 million years. DISCUSSION: Campanian pollen of Saururaceae precludes young (Eocene or younger) estimates for the Saururaceae root and crown age, but is in-line with maximum age scenarios.

Indexed as

Angiosperm evolutionConservative traitsMagnoliidsMolecular datingPaleophytogeographyPiperalesSaururus

Identifiers

PMID28626610
PMCPMC5472062
OpenAlexW2626184087

What OpenQuestion holds

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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 OpenQuestion graph.