Evidence map›Paper›PMID 33603225›Full record

ArticleCommunications biology2021

Fossil evidence for vampire squid inhabiting oxygen-depleted ocean zones since at least the Oligocene.

Martin Košťák, Ján Schlögl, Dirk Fuchs, Katarína Holcová, Natalia Hudáčková, Adam Culka, István Fözy, Adam Tomašových, Rastislav Milovský, Juraj Šurka and 1 more

Abstract read
In one paragraph

Article in Communications biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

6 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.

Martin KošťákInstitute of Geology and Palaeontology, Faculty of Science, Charles University, Prague, Czech Republic. martin.kostak@natur.cuni.cz.ORCID 0000-0002-0818-3505
Ján SchlöglDepartment of Geology and Palaeontology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Bratislava, Slovakia.
Dirk FuchsSNSB-Bayerische Staatssammlung für Paläontologie und Geologie, München, Germany.
Katarína HolcováInstitute of Geology and Palaeontology, Faculty of Science, Charles University, Prague, Czech Republic.
Natalia HudáčkováDepartment of Geology and Palaeontology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Bratislava, Slovakia.
Adam CulkaInstitute of Geochemistry, Mineralogy and Mineral resources, Faculty of Science, Charles University, Prague, Czech Republic.ORCID 0000-0002-1861-070X
István FözyDepartment of Palaeontology and Geology, Hungarian Natural History Museum, Budapest, Hungary.
Adam TomašovýchEarth Science Institute, Slovak Academy of Sciences, Bratislava, Slovakia.ORCID 0000-0002-0471-9480
Rastislav MilovskýEarth Science Institute, Slovak Academy of Sciences, Banská Bystrica, Slovakia.
Juraj ŠurkaEarth Science Institute, Slovak Academy of Sciences, Banská Bystrica, Slovakia.
Martin MazuchInstitute of Geology and Palaeontology, Faculty of Science, Charles University, Prague, Czech Republic.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A marked 120 My gap in the fossil record of vampire squids separates the only extant species (Vampyroteuthis infernalis) from its Early Cretaceous, morphologically-similar ancestors. While the extant species possesses unique physiological adaptations to bathyal environments with low oxygen concentrations, Mesozoic vampyromorphs inhabited epicontinental shelves. However, the timing of their retreat towards bathyal and oxygen-depleted habitats is poorly documented. Here, we document a first record of a post-Mesozoic vampire squid from the Oligocene of the Central Paratethys represented by a vampyromorph gladius. We assign Necroteuthis hungarica to the family Vampyroteuthidae that links Mesozoic loligosepiids with Recent Vampyroteuthis. Micropalaeontological, palaeoecological, and geochemical analyses demonstrate that Necroteuthis hungarica inhabited bathyal environments with bottom-water anoxia and high primary productivity in salinity-stratified Central Paratethys basins. Vampire squids were thus adapted to bathyal, oxygen-depleted habitats at least since the Oligocene. We suggest that the Cretaceous and the early Cenozoic OMZs triggered their deep-sea specialization.

Indexed as

AcclimatizationBiological EvolutionEcosystemFossilsAnimalsDecapodiformesHypoxiaMicroscopy, Electron, ScanningOceans and SeasOxygenSpectroscopy, Fourier Transform InfraredX-Ray MicrotomographyOxygen

Identifiers

PMID33603225
PMCPMC7893013

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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.