Project 3436: J. Sterli, M. S. de la Fuente, G. W. Rougier. 2018. New remains of Condorchelys antiqua (Testudinata) from the Early-Middle Jurassic of Patagonia: anatomy, phylogeny, and paedomorphosis in the early evolution of turtles. Journal of Vertebrate Paleontology. 38 (4):1-17.
Specimen: † Condorchelys antiqua (unvouchered)
View: Reconstruction right side

Abstract

New cranial and postcranial remains of the Early–Middle Jurassic turtle, Condorchelys antiqua, are described here in detail, providing new insights into the early evolution of turtles. Unconstrained and constrained cladistic analyses in addition to newly developed total-evidence Bayesian analysis were performed to explore large-scale turtle relationships and evolutionary trends. All the analyses show a similar resolution at the base of the tree, recovering several species of small-sized, fresh water turtles of the Early–Middle Jurassic at the base of the tree following the most basal, large-sized, terrestrial turtles from the Late Triassic. The calibration of the cladistic analyses and the tip-dating analysis provided similar results in the main nodes Testudines, Pan-Cryptodira, Cryptodira, Pan-Pleurodira, and Pleurodira, corroborating that the Jurassic is a key period for turtle evolution. The significant reduction in size in Early–Middle Jurassic stem turtles and the combination of certain characters (e.g., presence of fontanelles, loss of bones, loss of scutes) shown by those taxa suggests heterochronic changes, paedomorphosis in particular, at the base of the turtle tree. These morphological novelties could have trigged, or facilitated, the occupation of the aquatic niche as seen in Jurassic stem turtles.


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Article DOI: 10.1080/02724634.2018.1480112

Project DOI: 10.7934/P3436, http://dx.doi.org/10.7934/P3436
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 9 Documents
  • 99 Taxa
  • 1 Specimen
  • 245 Characters
Total size of project's media files: 1 MB

Download Project SDD File
Total scored cells: 16712
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 245
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 679
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:217/28
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MorphoBank Project 3436
  • Creation Date:
    28 March 2019
  • Publication Date:
    28 March 2019
  • Project views: 401


    Members

    member name taxa specimens media media
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    notes  media
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    Juliana Sterli
    Project Administrator
    Last logged in 03/29/19
    99110245000016712
    (14291, 0, 2421)
    00000


    Taxonomic Overview for Matrix 'M25964' (99 Taxa)

    taxon unscored
    cells
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    NPA
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    [1] Sphenodon punctatus
    Last Modified in 03/28/19
    91061050131001
    [2] † Owenetta kitchingorum
    Last Modified in 03/29/19
    3988880118001
    [3] † Anthodon serrarius
    Last Modified in 03/29/19
    251011010119001
    [4] † Odontochelys semitestacea
    Last Modified in 03/29/19
    969393056001
    [5] † Proganochelys quenstedti
    Last Modified in 03/29/19
    18199199028001
    [6] † Proterochersis robusta
    Last Modified in 03/29/19
    1656867013001
    [7] † Palaeochersis talampayensis
    Last Modified in 03/29/19
    79143142024001
    [8] † Australochelys africanus
    Last Modified in 03/29/19
    187494909001
    [9] † Kayentachelys aprix
    Last Modified in 03/29/19
    40180179026001
    [10] † Condorchelys antiqua
    Last Modified in 03/29/19
    113114113019001
    [11] † Heckerochelys romani
    Last Modified in 03/29/19
    118107107020001
    [12] † Eileanchelys waldmani
    Last Modified in 03/29/19
    13310310309001
    [13] † Indochelys spatulata
    Last Modified in 03/29/19
    211313103001
    [14] † Siamochelys peninsularis
    Last Modified in 03/29/19
    187565503001
    [15] † Niolamia argentina
    Last Modified in 03/29/19
    13311410903001
    [16] † Gaffneylania auricularis
    Last Modified in 03/29/19
    166787603001
    [17] † Warkalania carinaminor
    Last Modified in 03/29/19
    228151502001
    [18] † Meiolania platyceps
    Last Modified in 03/29/19
    2521721307001
    [19] † Ninjemys oweni
    Last Modified in 03/29/19
    200454500001
    [20] † Chubutemys copelloi
    Last Modified in 03/29/19
    13710410206001
    [21] † Mongolochelys efremovi
    Last Modified in 03/29/19
    12219219014001
    [22] † Peligrochelys walshae
    Last Modified in 03/29/19
    194484704001
    [23] † Otwayemys cunicularius
    Last Modified in 03/29/19
    177646305001
    [24] † Kallokibotion bajazidi
    Last Modified in 03/29/19
    71155154020001
    [25] † Platychelys oberndorferi
    Last Modified in 03/29/19
    1528282011001
    [26] † Notoemys laticentralis
    Last Modified in 03/29/19
    114121121010001
    [27] † Notoemys oxfordiensis
    Last Modified in 03/29/19
    182575706001
    [28] † Notoemys zapatocaensis
    Last Modified in 03/29/19
    170727005001
    [29] † Prochelidella cerrobarcinae
    Last Modified in 03/29/19
    187535305001
    [30] Elseya dentata
    Last Modified in 03/28/19
    26188188031001
    [31] Myuchelys latisternum
    Last Modified in 03/28/19
    9204204032001
    [32] Chelodina colliei
    Last Modified in 03/28/19
    5210210030001
    [33] Chelodina longicollis
    Last Modified in 03/28/19
    1213213031001
    [34] † Yaminuechelys maior
    Last Modified in 03/29/19
    85134134026001
    [35] Phrynops geoffroanus
    Last Modified in 03/28/19
    1214214030001
    [36] Chelus fimbriatus
    Last Modified in 03/28/19
    0212212033001
    [37] † Araripemys barretoi
    Last Modified in 03/29/19
    48179179018001
    [38] Erymnochelys madagascariensis
    Last Modified in 03/28/19
    16197197032001
    [39] Pelomedusa subrufa
    Last Modified in 03/28/19
    0215214031001
    [40] Podocnemis expansa
    Last Modified in 03/28/19
    1214214030001
    [41] † Dorsetochelys delairi
    Last Modified in 03/29/19
    1418585019001
    [42] † Pleurosternon bullockii
    Last Modified in 03/29/19
    71144144030001
    [43] † Glyptops plicatulus
    Last Modified in 03/29/19
    42169169034001
    [44] † Dinochelys whitei
    Last Modified in 03/29/19
    128105104013001
    [45] † Neurankylus eximius
    Last Modified in 03/29/19
    11812012007001
    [46] † Trinitichelys hiatti
    Last Modified in 03/29/19
    69147147029001
    [47] † Plesiobaena antiqua
    Last Modified in 03/29/19
    44176176025001
    [48] † Boremys pulchra
    Last Modified in 03/29/19
    52162162031001
    [49] † Baena arenosa
    Last Modified in 03/29/19
    41185185019001
    [50] † Chisternon undatum
    Last Modified in 03/29/19
    39182182024001
    [51] † Portlandemys macdowelli
    Last Modified in 03/29/19
    152909003001
    [52] † Plesiochelys etalloni
    Last Modified in 03/29/19
    6917316907001
    [53] † Solnhofia parsonsi
    Last Modified in 03/29/19
    64163162019001
    [54] † Thalassemys moseri
    Last Modified in 03/29/19
    105126126014001
    [55] † Santanachelys gaffneyi
    Last Modified in 03/29/19
    10413413407001
    [56] † Xinjiangchelys junggarensis
    Last Modified in 03/29/19
    1498383013001
    [57] † Hangaiemys hoburensis
    Last Modified in 03/29/19
    8115915806001
    [58] † Judithemys sukhanovi
    Last Modified in 03/29/19
    37186184024001
    [59] † Dracochelys bicuspis
    Last Modified in 03/29/19
    75148148022001
    [60] † Sinemys lens
    Last Modified in 03/29/19
    91136135019001
    [61] † Ordosemys leios
    Last Modified in 03/29/19
    8115615608001
    [62] † Toxochelys latiremys
    Last Modified in 03/29/19
    46174174025001
    [63] Caretta caretta
    Last Modified in 03/28/19
    7206205033001
    [64] Chelonia mydas
    Last Modified in 03/28/19
    8205205032001
    [65] † Mesodermochelys undulatus
    Last Modified in 03/29/19
    1338686026001
    [66] Dermochelys coriacea
    Last Modified in 03/28/19
    11171171063001
    [67] † Macroclemys schmidti
    Last Modified in 03/29/19
    156878702001
    [68] Macroclemys temminckii
    Last Modified in 03/28/19
    18214213014001
    [69] † Protochelydra zangerli
    Last Modified in 03/29/19
    147898909001
    [70] Chelydra serpentina
    Last Modified in 03/28/19
    24207207014001
    [71] Platysternon megacephalum
    Last Modified in 03/28/19
    2214214029001
    [72] † Mongolemys elegans
    Last Modified in 03/29/19
    39180178028001
    [73] Gopherus polyphemus
    Last Modified in 03/28/19
    0219218027001
    [74] Eurotestudo hermanni
    Last Modified in 03/28/19
    2216216027001
    [75] † Chelonoidis gringorum
    Last Modified in 03/29/19
    183575705001
    [76] Chelonoidis chilensis
    Last Modified in 03/28/19
    1218217027001
    [77] † Stylemys nebraskensis
    Last Modified in 03/29/19
    113122122010001
    [78] Chrysemys picta
    Last Modified in 03/28/19
    0218218027001
    [79] Trachemys scripta
    Last Modified in 03/28/19
    4200200041001
    [80] Emys orbicularis
    Last Modified in 03/28/19
    10211211024001
    [81] Geoclemys hamiltonii
    Last Modified in 03/28/19
    1216216028001
    [82] † Echmatemys wyomingensis
    Last Modified in 03/29/19
    171686707001
    [83] † Emarginachelys cretacea
    Last Modified in 03/29/19
    94127127024001
    [84] † Baptemys wyomingensis
    Last Modified in 03/29/19
    47171170028001
    [85] Dermatemys mawii
    Last Modified in 03/28/19
    6211209030001
    [86] † Xenochelys formosa
    Last Modified in 03/29/19
    107111111027001
    [87] Staurotypus triporcatus
    Last Modified in 03/28/19
    5212211029001
    [88] Sternotherus odoratus
    Last Modified in 03/28/19
    1210210034001
    [89] Kinosternon flavescens
    Last Modified in 03/28/19
    7204204034001
    [90] † Basilemys variolosa
    Last Modified in 03/29/19
    11912011808001
    [91] † Yehguia tatsuensis
    Last Modified in 03/29/19
    194484803001
    [92] † Adocus beatus
    Last Modified in 03/29/19
    38198197010001
    [93] † Hoplochelys crassa
    Last Modified in 03/29/19
    1815454010001
    [94] Apalone spinifera
    Last Modified in 03/28/19
    0189189056001
    [95] † Plastomenus aff. thomassii
    Last Modified in 03/29/19
    75116116054001
    [96] Pelodiscus sinensis
    Last Modified in 03/28/19
    33156156056001
    [97] Lissemys punctata
    Last Modified in 03/28/19
    0188188057001
    [98] † Anosteira ornata
    Last Modified in 03/29/19
    96112111038001
    [99] Carettochelys insculpta
    Last Modified in 03/28/19
    1195195049001


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    Total project views401
    Project overview77
    Matrix views40Matrix landing page (29 views); SM2 (11 views);
    Media views67Media search (59 views); M662032 (8 views);
    Taxon list130
    Documents list23
    Specimen list32
    Bibliography12
    Views for media list20




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    Total downloads from project8
    Document downloads2SM 10 (1 download); SM1 (1 download);
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