Project 631: R. J. Garwood, J. A. Dunlop, G. Giribet, M. D. Sutton. 2011. Anatomically modern Carboniferous harvestmen demonstrate early cladogenesis and stasis in Opiliones. Nature Communications. 2 (444).
Specimen: Macrogyion cronus (MNHN/SOT:079398)
View: Lateral

Abstract

Harvestmen, the third most-diverse arachnid order, are an ancient group found on all continental landmasses, except Antarctica. However, a terrestrial mode of life and leathery, poorly mineralized exoskeleton makes preservation unlikely, and their fossil record is limited. The few Palaeozoic species discovered to date appear surprisingly modern, but are too poorly preserved to allow unequivocal taxonomic placement. Here, we use high-resolution X-ray micro-tomography to describe two new harvestmen from the Carboniferous (~305 Myr) of France. The resulting computer models allow the first phylogenetic analysis of any Palaeozoic Opiliones, explicitly resolving both specimens as members of different extant lineages, and providing corroboration for molecular estimates of an early Palaeozoic radiation within the order. Furthermore, remarkable similarities between these fossils and extant harvestmen implies extensive morphological stasis in the order. Compared with other arachnids—and terrestrial arthropods generally—harvestmen are amongst the first groups to evolve fully modern body plans.


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Project DOI: 10.7934/P631, http://dx.doi.org/10.7934/P631
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 1 Document
  • 44 Taxa
  • 1 Specimen
  • 253 Characters
Total size of project's media files: 1 MB

Download Project SDD File
Total scored cells: 8831
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 253
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 542
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:253/0
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MorphoBank Project 631


    Members

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    MorphoBank Curator
    Project Administrator
    Last logged in 04/14/14
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    Maureen Admin
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    Jason Dunlop
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    Russell Garwood
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    Last logged in 01/08/12
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    Gonzalo Giribet
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    Last logged in 11/27/11
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    Jo Wolfe
    Full membership
    Last logged in 11/20/11
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    Taxonomic Overview for Matrix 'M1446' (44 Taxa)

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    [1] Limulus
    Last Modified in 12/05/13
    42161161050006
    [2] Carcinoscorpius
    Last Modified in 12/05/13
    44159159050006
    [3] Androctonus
    Last Modified in 12/05/13
    32176176045006
    [4] Belisarius
    Last Modified in 12/05/13
    38166166049006
    [5] Siro
    Last Modified in 12/05/13
    33191191029006
    [6] Parasiro
    Last Modified in 12/05/13
    48176176029006
    [7] Stylocellus
    Last Modified in 12/05/13
    48179179026006
    [8] StylocellusJP
    Last Modified in 12/05/13
    48179179026006
    [9] Dalquestia
    Last Modified in 12/05/13
    48186186019006
    [10] Odiellus
    Last Modified in 12/05/13
    35196196022006
    [11] Phalangium
    Last Modified in 12/05/13
    34197197022006
    [12] Opilio
    Last Modified in 12/05/13
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    [13] Astrobunus
    Last Modified in 12/05/13
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    [14] Nelima
    Last Modified in 12/05/13
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    [15] Leiobunum
    Last Modified in 12/05/13
    32199199022006
    [16] Hadrobunus
    Last Modified in 12/05/13
    47187187019006
    [17] Caddo
    Last Modified in 12/05/13
    48186186019006
    [18] Ischyropsalis
    Last Modified in 12/05/13
    35191191027006
    [19] Hesperonemastoma
    Last Modified in 12/05/13
    47180180026006
    [20] Ceratolasma
    Last Modified in 12/05/13
    48181181024006
    [21] Sabacon
    Last Modified in 12/05/13
    47182182024006
    [22] Taracus
    Last Modified in 12/05/13
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    [23] Dicranolasma
    Last Modified in 12/05/13
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    [24] Centetostoma
    Last Modified in 12/05/13
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    [25] Ortholasma
    Last Modified in 12/05/13
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    [26] Nemastoma
    Last Modified in 12/05/13
    33191191029006
    [27] Nipponopsalis
    Last Modified in 12/05/13
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    [28] Trogulus
    Last Modified in 12/05/13
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    [29] Halitherses
    Last Modified in 12/05/13
    1508383020006
    [30] Ameticos scolos
    Last Modified in 12/05/13
    1904949014006
    [31] Macrogyion cronus
    Last Modified in 12/05/13
    1875555011006
    [32] Equitius
    Last Modified in 12/05/13
    56175175022006
    [33] Triaenobunus
    Last Modified in 12/05/13
    58173173022006
    [34] Zuma
    Last Modified in 12/05/13
    58173173022006
    [35] Oncopus
    Last Modified in 12/05/13
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    [36] Gnomulus
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    [37] Scotolemon
    Last Modified in 12/05/13
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    [38] Maiorerus
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    [39] Bishopella
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    [40] Gnidia
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    [41] Pachyloides
    Last Modified in 12/05/13
    34193193026006
    [42] Hoplobunus
    Last Modified in 12/05/13
    45181181027006
    [43] Solifugae
    Last Modified in 12/05/13
    34157157062006
    [44] Pseudoscorpiones
    Last Modified in 12/05/13
    34163163056006


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    Project overview2383
    Specimen list1815
    Taxon list9918
    Documents list1236
    Bibliography740
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    Matrix views1760Matrix landing page (1537 views); Anatomically modern Carboniferous harvestmen (223 views);




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    Matrix downloads3Anatomically modern Carboniferous harvestmen (3 downloads);