Project 3766: M. Viglino, C. M. Gaetán, J. I. Cuitiño, M. R. Buono. 2020. First Toothless Platanistoid from the Early Miocene of Patagonia: the Golden Age of Diversification of the Odontoceti. Journal of Mammalian Evolution. epub ahead of print:none yet.
Specimen: Platanista gangetica (unvouchered)
View: drawing

Abstract

Lower Miocene outcrops from Patagonia (Gaiman Formation, Burdigalian) may reveal more clues for the yet unknown aspects for this period in the evolution of odontocetes. Here, we present the first toothless platanistoid dolphin from the lower Miocene of Patagonia, Dolgopolis kinchikafiforo, gen. et sp. nov. The specimen includes an incomplete skull, with no mandibles or earbones, but sufficiently different from other named odontocetes to propose a new genus and species. Phylogenetic analyses indicate it is a platanistoid of uncertain position within the group, and that it shares some homoplastic characters with physeteroids and ziphioids. Given the absence of defined alveoli and teeth and an inferred moderately short and wide rostrum, we interpreted this new species as most likely a capture suction feeder. Based on our phylogenetic hypothesis, the optimization of feeding strategies recovered raptorial feeding as the plesiomorphic method, and convergent evolution of capture suction feeders in at least four lineages. Platanistoids recorded all feeding strategies during the late Oligocene-early Miocene, although raptorial is the predominant method. This suggests a partitioning of the ecological niches in the early phases of platanistoid evolution, as well as a high diversification of feeding methods previously underestimated for this period. Thus, ecological adaptations have a strong evolutionary pressure in odontocete communities and should be further explored.


Read the article »

Article DOI: 10.1007/s10914-020-09505-w

Project DOI: 10.7934/P3766, http://dx.doi.org/10.7934/P3766
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 1 Document
  • 89 Taxa
  • 1 Specimen
  • 286 Characters
Total size of project's media files: 776.06k

Download Project SDD File
Total scored cells: 17601
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 286
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 733
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:286/0
Currently Viewing:
MorphoBank Project 3766
  • Creation Date:
    02 July 2020
  • Publication Date:
    26 August 2020
  • Project views: 133

    Authors' Institutions

    • Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)

    • Instituto Patagónico de Geología y Paleontología, CCT CONICET-CENPAT



    Members

    member name taxa specimens media chars character
    media
    labels
    cell scorings
    (scored, NPA, "-")
    cell
    medialabels
    rules
    MorphoBank Curator
    Project Administrator
    Last logged in 08/26/20
    89112860017601
    (17234, 0, 367)
    000
    Mariana Viglino
    Full membership
    Last logged in 07/13/20
    0000000
    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M26816' (89 Taxa)

    taxon unscored
    cells
    scored
    cells
    no cell
    support
    NPA
    cells
    "-" cellscell images labels on
    cell images
    member
    access
    [1] † Georgiacetus vogtlensis
    Last Modified in 07/13/20
    134140140012002
    [2] † Zygorhiza kochii
    Last Modified in 07/13/20
    68211208010002
    [3] † Archaeodelphis patrius
    Last Modified in 07/13/20
    165111111010002
    [4] † Xenorophus sloanii
    Last Modified in 07/13/20
    195868605002
    [5] † Agorophius pygmaeus
    Last Modified in 07/13/20
    14913413304002
    [6] † Patriocetus kazakhstanicus
    Last Modified in 07/13/20
    16611811703002
    [7] † Orycterocetus crocodilinus
    Last Modified in 07/13/20
    103177172011002
    [8] Physeter catodon
    Last Modified in 07/07/20
    13266262011002
    [9] Kogia breviceps
    Last Modified in 07/07/20
    11257255020002
    [10] Tasmacetus shepherdi
    Last Modified in 07/07/20
    1227327004002
    [11] Berardius bairdii
    Last Modified in 07/07/20
    1726726207002
    [12] Ziphius cavirostris
    Last Modified in 07/07/20
    927626809002
    [13] Mesoplodon ginkgodens
    Last Modified in 07/07/20
    3025024907002
    [14] † Xiphiacetus bossi
    Last Modified in 07/13/20
    5423422705002
    [15] † Simocetus rayi
    Last Modified in 07/13/20
    12915515502002
    [16] Lipotes vexillifer
    Last Modified in 07/07/20
    627827802002
    [17] † Parapontoporia sternbergi
    Last Modified in 07/13/20
    13015715303002
    [18] Inia geoffrensis
    Last Modified in 07/07/20
    5284271010002
    [19] Pontoporia blainvillei
    Last Modified in 07/07/20
    528127605002
    [20] † Pliopontos littoralis
    Last Modified in 07/13/20
    11017517105002
    [21] † Brachydelphis mazeasi
    Last Modified in 07/13/20
    9020119402002
    [22] † Kentriodon pernix
    Last Modified in 07/13/20
    6322522003002
    [23] † Atocetus iquensis
    Last Modified in 07/13/20
    6122422104002
    [24] † Hadrodelphis calvertense
    Last Modified in 07/13/20
    12215915905002
    [25] † Albireo whistleri
    Last Modified in 07/13/20
    5322922904002
    [26] † Denebola brachycephala
    Last Modified in 07/13/20
    13714714702002
    [27] Delphinapterus leucas
    Last Modified in 07/07/20
    528327605002
    [28] Monodon monoceros
    Last Modified in 07/07/20
    1127526708002
    [29] † Odobenocetops peruvianus
    Last Modified in 07/13/20
    107160160019002
    [30] † Australithax intermedia
    Last Modified in 07/13/20
    16611911901002
    [31] † Lomacetus ginsburgi
    Last Modified in 07/13/20
    17311211201002
    [32] † Miophocaena nishinoi
    Last Modified in 07/13/20
    200868600002
    [33] † Archaeophocaena teshioensis
    Last Modified in 07/13/20
    229555502002
    [34] † Pterophocaena nishinoi
    Last Modified in 07/13/20
    13415115101002
    [35] † Haborophocoena minutus
    Last Modified in 07/13/20
    17611010901002
    [36] † Haborophocoena toyoshimai
    Last Modified in 07/13/20
    11117417401002
    [37] † Piscolithax boreios
    Last Modified in 07/13/20
    13514914902002
    [38] † Piscolithax longirostris
    Last Modified in 07/13/20
    9419019002002
    [39] † Piscolithax tedfordi
    Last Modified in 07/13/20
    11017417402002
    [40] † Salumiphocaena stocktoni
    Last Modified in 07/13/20
    15313013003002
    [41] † Septemtriocetus bosselaersi
    Last Modified in 07/13/20
    196858505002
    [42] Phocoena sinus
    Last Modified in 07/07/20
    2126526203002
    [43] Phocoena spinipinnis
    Last Modified in 07/07/20
    1727426603002
    [44] Phocoena dioptrica
    Last Modified in 07/07/20
    7021921303002
    [45] Phocoena phocoena
    Last Modified in 07/07/20
    628627604002
    [46] Phocoenoides dalli
    Last Modified in 07/07/20
    1827926602002
    [47] Neophocaena phocaenoides
    Last Modified in 07/07/20
    1227927004002
    [48] Lissodelphis borealis
    Last Modified in 07/07/20
    2526625902002
    [49] Cephalorhynchus hectori
    Last Modified in 07/07/20
    1527026803002
    [50] Lagenorhynchus acutus
    Last Modified in 07/07/20
    3125325203002
    [51] Orcaella brevirostris
    Last Modified in 07/07/20
    3325224904002
    [52] Orcinus orca
    Last Modified in 07/07/20
    1527626605002
    [53] Feresa attenuata
    Last Modified in 07/07/20
    1826826404002
    [54] Globicephala macrorhynchus
    Last Modified in 07/07/20
    1826626305002
    [55] Grampus griseus
    Last Modified in 07/07/20
    2226526004002
    [56] † Hemisyntrachelus cortesii
    Last Modified in 07/13/20
    10617717604002
    [57] Peponocephala electra
    Last Modified in 07/07/20
    2426225804002
    [58] Pseudorca crassidens
    Last Modified in 07/07/20
    1727426405002
    [59] Delphinus delphis
    Last Modified in 07/07/20
    1327626904002
    [60] Lagenodelphis hosei
    Last Modified in 07/07/20
    2126826203002
    [61] Sousa chinensis
    Last Modified in 07/07/20
    3825424503002
    [62] Stenella attenuata
    Last Modified in 07/07/20
    1527826704002
    [63] Tursiops truncatus
    Last Modified in 07/07/20
    129728104002
    [64] Sotalia fluviatilis
    Last Modified in 07/07/20
    2226626103002
    [65] Steno bredanensis
    Last Modified in 07/07/20
    1527526704002
    [66] † Eodelphinus kabatensis
    Last Modified in 07/13/20
    15812912800002
    [67] † Papahu taitapu
    Last Modified in 07/13/20
    14913713601002
    [68] † Waipatia hectori
    Last Modified in 07/13/20
    239464502002
    [69] † Awamokoa tokarahi
    Last Modified in 07/13/20
    208807800002
    [70] † Waipatia maerewhenua
    Last Modified in 07/13/20
    8020320204002
    [71] † Otekaikea marplesi
    Last Modified in 07/13/20
    12416216101002
    [72] † Otekaikea huata
    Last Modified in 07/13/20
    11816816701002
    [73] † Squalodon calvertensis
    Last Modified in 07/13/20
    6721921603002
    [74] † Notocetus vanbenedeni
    Last Modified in 07/13/20
    7521120605002
    [75] † Squalodelphis fabianii
    Last Modified in 07/13/20
    18110610401002
    [76] † Prosqualodon davidis
    Last Modified in 07/13/20
    10318217706002
    [77] † Squaloziphius emlongi
    Last Modified in 07/13/20
    15612512406002
    [78] † Zarhachis flagellator
    Last Modified in 07/13/20
    7821120503002
    [79] † Pomatodelphis inaequalis
    Last Modified in 07/13/20
    11216716707002
    [80] Platanista gangetica
    Last Modified in 07/07/20
    1727026306002
    [81] † Phocageneus venustus
    Last Modified in 07/13/20
    252353400002
    [82] † Papahu sp zmt 73
    Last Modified in 07/13/20
    242444400002
    [83] † OU 22670
    Last Modified in 07/13/20
    231575500002
    [84] † Phoberodon arctirostris
    Last Modified in 07/13/20
    13714914702002
    [85] † OU 21798
    Last Modified in 07/13/20
    8221220400002
    [86] † Aondelphis talen
    Last Modified in 07/13/20
    220646402002
    [87] † Dolgopolis kinchikafiforo
    Last Modified in 07/13/20
    1779998011002
    [88] † Inticetus vertizi
    Last Modified in 07/13/20
    14514614100002
    [89] † Prosqualodon australis
    Last Modified in 07/13/20
    186999901002


    Project views

    type number of views Individual items viewed (where applicable)
    Total project views133
    Project overview32
    Matrix views18Data matrix provided by author (8 views); Matrix landing page (10 views);
    Media views29Media search (26 views); M692519 (3 views);
    Specimen list10
    Documents list12
    Taxon list25
    Views for media list4
    Bibliography3




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project1
    Project downloads1