Project 3184: F. Herrera, D. Peppe, G. Shi, C. Mays, N. Ichinnorov, M. Takahashi, J. J. Bevitt, P. S. Herendeen, P. R. Crane. 2020. Reconstructing Krassilovia mongolica supports recognition of a new and unusual group of Mesozoic conifers. PLOS ONE. 15 (1):e0226779.
Specimen: † Krassilovia mongolica - Podozamites harrisii (unvouchered)
View: 3D reconstruction

Abstract

Previously unrecognized anatomical features of the cone scales of the enigmatic Early Cretaceous conifer Krassilovia mongolica include the presence of transversely oriented paracytic stomata, which is unusual for all other extinct and extant conifers. Identical stomata are present on co-occurring broad, linear, multiveined leaves assigned to Podozamites harrisii, providing evidence that K. mongolica and P. harrisii are the seed cones and leaves of the same extinct plant. Phylogenetic analyses of the relationships of the reconstructed Krassilovia plant place it in an informal clade that we name the Krassilovia Clade, which also includes Swedenborgia cryptomerioides–Podozamites schenkii, and Cycadocarpidium erdmanni–Podozamites schenkii. All three of these plants have linear leaves that are relatively broad compared to most living conifers, and that are also multiveined with transversely oriented paracytic stomata. We propose that these may be general features of the Krassilovia Clade. Paracytic stomata, and other features of this new group, recall features of extant and fossil Gnetales, raising questions about the phylogenetic homogeneity of the conifer clade similar to those raised by phylogenetic analyses of molecular data.


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Article DOI: 10.1371/journal.pone.0226779

Project DOI: 10.7934/P3184, http://dx.doi.org/10.7934/P3184
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 39 Taxa
  • 1 Specimen
  • 52 Characters
Total size of project's media files: 1.42M

Download Project SDD File
Total scored cells: 1731
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 52
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 137
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:52/0
Currently Viewing:
MorphoBank Project 3184

    This research
    supported by

    Authors' Institutions

    • Swedish Museum of Natural History (Naturhistoriska riksmuseet) Stockholm

    • Chinese Academy of Sciences

    • Monash University

    • Niigata University

    • Yale University

    • Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences

    • Chicago Botanic Garden

    • Australian Nuclear Science and Technology Organisation

    • Mongolian Academy of Sciences

    • Oak Spring Garden Foundation



    Members

    member name taxa specimens media chars character
    comms
       
    notes  media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    Fabiany Herrera
    Project Administrator
    391152052001731
    (1678, 1, 52)
    000
    Peter Crane
    Observer
    000000000
    (0, 0, 0)
    000
    Patrick Herendeen
    Observer
    000000000
    (0, 0, 0)
    000
    Gongle Shi
    Observer
    000000000
    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M26014' (39 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
    support
    NPA
    cells
    "-" cellscell images labels on
    cell images
    member
    access
    [1] † Aethophyllum stipulare
    Taxon name last Modified on 04/16/19
    4464602004
    [2] † Barthelia furcata
    Taxon name last Modified on 04/16/19
    4504800004
    [3] † Callistophyton poroxyloides
    Taxon name last Modified on 04/16/19
    42020127004
    [4] † Concholepis harrisii
    Taxon name last Modified on 04/16/19
    23292900004
    [5] † Cordaixylon dumusum
    Taxon name last Modified on 04/16/19
    0484804004
    [6] † Dicranophyllum hallei
    Taxon name last Modified on 04/16/19
    19333300004
    [7] † Dolomitia cittertiae
    Taxon name last Modified on 04/16/19
    18353400004
    [8] † Emporia cryptica
    Taxon name last Modified on 04/16/19
    0555200004
    [9] † Emporia lockardii
    Taxon name last Modified on 04/16/19
    1555100004
    [10] † Emporia royalii
    Taxon name last Modified on 05/20/19
    0555200004
    [11] † Ernestiodendron flliciforme
    Taxon name last Modified on 04/16/19
    6464600004
    [12] † Ferugliocladus spp.
    Taxon name last Modified on 04/16/19
    3494900004
    [13] † Genoites patagonica
    Taxon name last Modified on 04/16/19
    14383800004
    [14] † Hanskerpia hamiltonensis
    Taxon name last Modified on 04/16/19
    8474400004
    [15] † Majonica alpina
    Taxon name last Modified on 04/16/19
    10484200004
    [16] † Mesoxylon priapii
    Taxon name last Modified on 04/16/19
    0484804004
    [17] † Kungurodendron sharovii
    Taxon name last Modified on 04/16/19
    8464400004
    [18] † Ortiseia spp.
    Taxon name last Modified on 04/16/19
    6514600004
    [19] † Otovicia hypnoides
    Taxon name last Modified on 04/16/19
    1545100004
    [20] † Thucydia mahoningensis
    Taxon name last Modified on 04/16/19
    0535002004
    [21] † Timanostrobus muravievii
    Taxon name last Modified on 04/16/19
    9434300004
    [22] † Utrechtia floriniformis
    Taxon name last Modified on 04/16/19
    10434200004
    [23] † Voltzia hexagona
    Taxon name last Modified on 04/16/19
    10424200004
    [24] † Vojnovskyean plant
    Taxon name last Modified on 05/20/19
    18323202004
    [25] † Telemachus elongatus - heidiphyllum elongatum
    Taxon name last Modified on 04/16/19
    1494902004
    [26] † Swedenborgia cryptomerioides - podozamites schenkii
    Taxon name last Modified on 04/16/19
    15363502004
    [27] † Krassilovia mongolica - podozamites harrisii
    Taxon name last Modified on 04/16/19
    13383702004
    [28] † Cycadocarpidium erdmanni - podozamites schenkii
    Taxon name last Modified on 05/20/19
    14373602004
    [29] † Manifera talaris
    Taxon name last Modified on 04/16/19
    29252300004
    [30] † Pseudovoltzia liebeana
    Taxon name last Modified on 05/21/18
    12404000004
    [31] Sciadopitys verticillata
    Taxon name last Modified on 07/10/19
    0515101004
    [32] Cedrus deodara
    Taxon name last Modified on 07/10/19
    0525200004
    [33] † Schizolepidopsis canicularis
    Taxon name last Modified on 07/16/19
    12404000004
    [34] † Elatides zhoui
    Taxon name last Modified on 07/16/19
    3494900004
    [35] Cunninghamia lanceolata
    Taxon name last Modified on 07/10/19
    0525200004
    [36] † Dechellyia gormani - Masculostrobus clathratus
    Taxon name last Modified on 07/25/19
    12414000004
    [37] † Pararaucaria taquetrensis
    Taxon name last Modified on 11/01/19
    22303000004
    [38] † Frenelopsis ramosissima
    Taxon name last Modified on 11/01/19
    19333300004
    [39] † Lebowskia grandifolia
    Taxon name last Modified on 11/04/19
    13393702004


    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project178
    Matrix downloads26Herrera et al_Krassilovia mongolica (26 downloads);
    Project downloads152