Evidence map›Paper›PMID 31032408›Full record

ArticleScience advances2019

Exceptional preservation of mid-Cretaceous marine arthropods and the evolution of novel forms via heterochrony.

J Luque, R M Feldmann, O Vernygora, C E Schweitzer, C B Cameron, K A Kerr, F J Vega, A Duque, M Strange, A R Palmer and 1 more

Abstract read
In one paragraph

Article in Science advances, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed.

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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

11 authors.

J LuqueDepartment of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada.ORCID 0000-0002-4391-5951
R M FeldmannDepartment of Geology, Kent State University, Kent, OH 44242, USA.
O VernygoraDepartment of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada.ORCID 0000-0001-6444-3888
C E SchweitzerDepartment of Geology, Kent State University at Stark, 6000 Frank Ave. NW, North Canton, OH 44720, USA.
C B CameronDépartement de Sciences Biologiques Université de Montréal, Montréal, QC H3C 3J7, Canada.
K A KerrSmithsonian Tropical Research Institute, Balboa-Ancón 0843-03092, Panamá, Panamá.
F J VegaInstituto de Geología, Universidad Autónoma de México, Ciudad Universitaria, México, CDMX 04510, México.
A DuqueComputer Animation and Visual Effects, College of Communication and Design, Lynn University, 2601 North Military Trail, Boca Raton, FL 33431, USA.
M StrangeDepartment of Geoscience, University of Nevada, Las Vegas, 4505 S. Maryland Parkway, Las Vegas, NV 89154-4010, USA.ORCID 0000-0003-4789-3371
A R PalmerDepartment of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada.
C JaramilloSmithsonian Tropical Research Institute, Balboa-Ancón 0843-03092, Panamá, Panamá.ORCID 0000-0002-2616-5079

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Evolutionary origins of novel forms are often obscure because early and transitional fossils tend to be rare, poorly preserved, or lack proper phylogenetic contexts. We describe a new, exceptionally preserved enigmatic crab from the mid-Cretaceous of Colombia and the United States, whose completeness illuminates the early disparity of the group and the origins of novel forms. Its large and unprotected compound eyes, small fusiform body, and leg-like mouthparts suggest larval trait retention into adulthood via heterochronic development (pedomorphosis), while its large oar-like legs represent the earliest known adaptations in crabs for active swimming. Our phylogenetic analyses, including representatives of all major lineages of fossil and extant crabs, challenge conventional views of their evolution by revealing multiple convergent losses of a typical "crab-like" body plan since the Early Cretaceous. These parallel morphological transformations may be associated with repeated invasions of novel environments, including the pelagic/necto-benthic zone in this pedomorphic chimera crab.

Indexed as

Biological EvolutionFossilsAdaptation, PhysiologicalAnimalsArthropodsCell LineageColombiaLarvaPhylogenySwimmingUnited States

Identifiers

PMID31032408
PMCPMC6482010

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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.