Project 1194: P. S. R. Romano,V. Gallo,R. R. C. Ramos,L. Antonioli. 2014. Atolchelys lepida, a new side-necked turtle from the Early Cretaceous of Brazil and the age of crown Pleurodira. Biology Letters. 10 (7):1744-957X.
Specimen: † Atolchelys (UERJ.MC:2)

Abstract

We report a new pleurodiran turtle from the Barremian Morro do Chaves Formation, Sergipe-Alagoas Basin, Brazil. We tested the phylogenetic position of Atolchelys lepida gen. et sp. nov. by including it in a comprehensive cladistic analysis of pleurodires. The new species is a basal member of Bothremydidae and simultaneously the oldest unambiguous crown Pleurodira. The biogeographic and chronostratigraphic significance of the finding has implications for the calibration of molecular clocks studies by pushing back the minimum age of crown Pleurodira by more than 12 Ma (ca. 125 Ma). The reanalysis of Pelomedusoides relationships provides evidence that the early evolution and relationships among the main lineages of side-necked turtles can be explained, at least partially, by a sequence of vicariance events.


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Article DOI: http://dx.doi.org/10.1098/rsbl.2014.0290

Project DOI: 10.7934/P1194, http://dx.doi.org/10.7934/P1194
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 49 Taxa
  • 1 Specimen
  • 175 Characters
Total size of project's media files: 1 MB

Download Project SDD File
Total scored cells: 5540
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 175
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 844
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:175/0
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MorphoBank Project 1194


    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    Pedro Romano
    Project Administrator
    Last logged in 08/22/14
    4900175000
    (0, 0, 0)
    000
    MorphoBank Curator
    Full membership
    Last logged in 11/06/14
    0110005540
    (5540, 0, 0)
    000
    Jamal Irving
    Full membership
    Last logged in Never
    0000000
    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M2816' (49 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
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    NPA
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    "-" cellscell images labels on
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    [1] Outgroup
    Last Modified in 07/07/14
    3814013700003
    [2] † Proganochelys
    Last Modified in 10/13/14
    616916900003
    [3] † Australochelys
    Last Modified in 10/13/14
    127484800003
    [4] † Palaeochersis
    Last Modified in 10/13/14
    106696900003
    [5] † Kayentachelys
    Last Modified in 10/13/14
    417117100003
    [6] † Selmacryptodira
    Last Modified in 10/13/14
    121917400003
    [7] Chelidae
    Last Modified in 07/07/14
    120117400003
    [8] Pelomedusidae
    Last Modified in 07/07/14
    019017500003
    [9] † Sokatra
    Last Modified in 10/22/14
    89868600003
    [10] † Araripemys
    Last Modified in 10/13/14
    816916700003
    [11] † Laganemys
    Last Modified in 10/13/14
    1815715700003
    [12] † Atolchelys
    Last Modified in 10/13/14
    108686700003
    [13] † Euraxemys
    Last Modified in 10/13/14
    716816800003
    [14] † Dirqadim
    Last Modified in 10/13/14
    7010510500003
    [15] Podocnemididae
    Last Modified in 07/07/14
    019717500003
    [16] † Hamadachelys
    Last Modified in 10/13/14
    5911611600003
    [17] † Brasilemys
    Last Modified in 10/13/14
    6610910900003
    [18] † Cearachelys
    Last Modified in 10/13/14
    1216816300003
    [19] † Galianemys emringeri
    Last Modified in 10/13/14
    6710910800003
    [20] † Galianemys whitei
    Last Modified in 10/13/14
    6610910900003
    [21] † Kurmademys
    Last Modified in 10/13/14
    2115415400003
    [22] † Kinkonychelys
    Last Modified in 10/13/14
    91848400003
    [23] † Sankuchemys
    Last Modified in 10/13/14
    110656500003
    [24] † Foxemys
    Last Modified in 10/13/14
    1116616400003
    [25] † Polysternon
    Last Modified in 10/13/14
    4812812700003
    [26] † Araiochelys
    Last Modified in 10/13/14
    4113413400003
    [27] † Zolhafah
    Last Modified in 10/13/14
    92838300003
    [28] † Rosasia
    Last Modified in 10/13/14
    5512012000003
    [29] † Bothremys cooki
    Last Modified in 10/13/14
    114616100003
    [30] † Bothremys maghrebiana
    Last Modified in 10/13/14
    5312812200003
    [31] † Bothremys kellyi
    Last Modified in 10/13/14
    85909000003
    [32] † Bothremys arabicus
    Last Modified in 10/13/14
    112636300003
    [33] † Chedighaii hutchisoni
    Last Modified in 10/13/14
    7210310300003
    [34] † Chedighaii barberi
    Last Modified in 10/13/14
    4413113100003
    [35] † Taphrosphys sulcatus
    Last Modified in 10/13/14
    5112512400003
    [36] † Taphrosphys congolensis
    Last Modified in 10/13/14
    6111411400003
    [37] † Taphrosphys ippolitoi
    Last Modified in 10/13/14
    80959500003
    [38] † Azabbaremys
    Last Modified in 10/13/14
    6810710700003
    [39] † Acleistochelys
    Last Modified in 10/13/14
    76999900003
    [40] † Labrostochelys
    Last Modified in 10/13/14
    7410210100003
    [41] † Phosphatochelys
    Last Modified in 10/13/14
    7110510400003
    [42] † Ummulisani
    Last Modified in 10/13/14
    6411411100003
    [43] † Rhothonemys
    Last Modified in 10/13/14
    111646400003
    [44] † Nigeremys
    Last Modified in 10/13/14
    99767600003
    [45] † Arenila
    Last Modified in 10/13/14
    103727200003
    [46] † Proterochersis
    Last Modified in 10/13/14
    141343400003
    [47] † Platychelys
    Last Modified in 10/13/14
    124535100003
    [48] † Notoemys
    Last Modified in 10/13/14
    120555500003
    [49] † Dortoka
    Last Modified in 10/13/14
    131474400003


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views19916
    Project overview3176
    Matrix views2200Matrix landing page (1925 views); (36 views); Atolchelys lepida, a new side-necked turtle from the Early Cretaceous of Brazil and the age of crown Pleurodira (239 views);
    Taxon list8750
    Media views4060Media search (3553 views); M336486 (507 views);
    Specimen list1730




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project195
    Matrix downloads49 (1 download); Atolchelys lepida, a new side-necked turtle from the Early Cretaceous of Brazil and the age of crown Pleurodira (48 downloads);
    Project downloads146