Project 3989: N. Robin, P. Gueriau, J. Luque, D. Jarvis, A. C. Daley, R. Vonk. 2021. The oldest peracarid crustacean reveals a Late Devonian freshwater colonization by isopod relatives. Biology Letters. 17 (6):20210226.
Specimen: † Oxyuropoda ligioides
View: Dorsal view

Abstract

Peracarida (e.g. woodlice and side-swimmers) are, together with their sister group Eucarida (e.g. krill and decapods), the most speciose group of modern crustaceans, suggested to have appeared as early as the Ordovician. While eucarids’ incursion onto land consists of mainly freshwater and littoral grounds, some peracarids have evolved fully terrestrial ground-crawling ecologies, inhabiting even our gardens in temperate regions (e.g. pillbugs and sowbugs). Their fossil record extends back to the Carboniferous and consists mainly of marine occurrences. Here, we provide a complete re-analysis of a fossil arthropod—
Oxyuropoda—reported in 1908 from the Late Devonian floodplains of Ireland, and left with unresolved systematic affinities despite a century of attempts at identification. Known from a single specimen preserved in two dimensions, we analysed its anatomy using digital microscopy and multispectral macroimaging to enhance the contrast of morphological structures. The new anatomical characters and completeness of Oxyuropoda, together with a phylogenetic analysis with representatives of all major Eumalacostraca groups, indicate that Oxyuropoda is a crown peracarid, part of a clade including amphipods and isopods. As such, Oxyuropoda is the oldest known species Peracarida, and provides evidence that derived peracarids had an incursion into freshwater and terrestrial environments as early as the Famennian, more than 360 Ma.


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Article DOI: 10.1098/rsbl.2021.0226

Project DOI: 10.7934/P3989, http://dx.doi.org/10.7934/P3989
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 49 Taxa
  • 1 Specimen
  • 181 Characters
Total size of project's media files: 207.71k

Download Project SDD File
Total scored cells: 3962
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 181
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 444
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:181/0
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MorphoBank Project 3989

    Authors' Institutions

    • Harvard University

    • Universiteit van Amsterdam (University of Amsterdam)

    • University of Lausanne

    • Naturalis Biodiversity Center

    • University College Cork



    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    Javier Luque
    Project Administrator
    4911181003962
    (3673, 0, 289)
    000


    Taxonomic Overview for Matrix 'M27447' (25 Taxa)

    taxon unscored
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    "-" cellscell images labels on
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    [1] Stomatopoda
    Last Modified in 05/24/21
    5162161015001
    [2] Bathynellacea
    Last Modified in 05/24/21
    33131129019001
    [3] Anaspidacea
    Last Modified in 05/24/21
    516916808001
    [4] Euphausiacea
    Last Modified in 05/24/21
    417417304001
    [5] Dendrobranchiata
    Last Modified in 05/24/21
    317117008001
    [6] Procaridea
    Last Modified in 05/24/21
    2115715703001
    [7] Caridea
    Last Modified in 05/24/21
    217417207001
    [8] Stenopodidea
    Last Modified in 05/24/21
    2914714705001
    [9] Reptantia
    Last Modified in 05/24/21
    217617108001
    [10] Mysida
    Last Modified in 05/24/21
    318417602001
    [11] Lophogastrida
    Last Modified in 05/24/21
    1616316302001
    [12] Mictacea
    Last Modified in 05/24/21
    38128128015001
    [13] Bochusacea
    Last Modified in 05/24/21
    46128121014001
    [14] Isopoda
    Last Modified in 05/24/21
    3168163015001
    [15] Amphipoda
    Last Modified in 05/24/21
    4166158019001
    [16] Thermosbaenacea
    Last Modified in 05/24/21
    14156153014001
    [17] Cumacea
    Last Modified in 05/24/21
    1316416107001
    [18] Tanaidacea
    Last Modified in 05/24/21
    5176166010001
    [19] Spelaeogriphacea
    Last Modified in 05/24/21
    32149136013001
    [20] Leptostraca
    Last Modified in 05/24/21
    6161160015001
    [21] Brachypoda
    Last Modified in 05/24/21
    25127127029001
    [22] Anostraca
    Last Modified in 05/24/21
    17136135029001
    [23] Notostraca
    Last Modified in 05/24/21
    22135135024001
    [24] Tealliocaris
    Last Modified in 06/23/21
    118606003001
    [25] Oxyuropoda
    Last Modified in 05/24/21
    169111101001


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views858
    Project overview91
    Media views147Media search (127 views); M811455 (20 views);
    Matrix views87Matrix landing page (61 views); Dataset Morphological Phylogeny Malacostraca (26 views);
    Taxon list359
    Specimen list93
    Views for media list46
    Bibliography35




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project16
    Project downloads15
    Matrix downloads1Dataset Morphological Phylogeny Malacostraca (1 download);