Project 3760: J. Wang, J. R. Wible, B. Guo, S. L. Shelley, H. Hu, S. Bi. 2021. A monotreme-like auditory apparatus in a Middle Jurassic haramiyidan. Nature. 590 (7845):279-283.
Specimen: † Vilevolodon diplomylos
View: reconstruction

Abstract

Among extant vertebrates, mammals are distinguished by having a chain of three auditory ossicles (malleus, incus and stapes) that transduce sound waves and promote an increased range of audible, especially high frequencies1. In contrast, the homologous bones in early fossil mammals and relatives also functioned in chewing through their bony attachments to the lower jaw2 (Fig. 1a,b). Recent discoveries of well-preserved Mesozoic mammals have provided glimpses into the transition from the dual (masticatory and auditory) to the single auditory function for the ossicles, which is now widely accepted to have occurred at least three times in mammal evolution3–6. Here we report a new haramiyidan from the Middle Jurassic (160 my) with remarkable preservation of the malleus, incus and ectotympanic (which supports the tympanic membrane) (Fig. 2) and compare it with other Mesozoic and extant mammals. We propose that the overlapping incudomallear articulation found in this and other Mesozoic fossils, in extant monotremes, and in early ontogeny in extant marsupials and placentals is a novel morphology that evolved in multiple groups of mammals in the transition from the dual to single function for the ossicles.


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Article DOI: 10.1038/s41586-020-03137-z

Project DOI: 10.7934/P3760, http://dx.doi.org/10.7934/P3760
This project containsMatrices
  • 1 Media
  • 1 Matrix
  • 1 Document
  • 134 Taxa
  • 1 Specimen
  • 509 Characters
Total size of project's media files: 463.79k

Download Project SDD File
Total scored cells: 33392
Total media associated with cells: 0
Total labels associated with cell media: 0
Characters
Total characters: 509
Total characters with associated media: 0
Total characters with media with labels: 0
Total character states: 1373
Total character states with associated media: 0
Total character states with media with labels:0
Total unordered/ordered characters:509/0
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MorphoBank Project 3760

    This research
    supported by

    Authors' Institutions

    • University of New England

    • Yunnan University

    • Carnegie Museum of Natural History

    • Indiana University of Pennsylvania

    • Inner Mongolia Museum of Natural History



    Members

    member name taxa specimens media chars character
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    (scored, NPA, "-")
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    Shundong Bi
    Project Administrator
    1341150900033392
    (33384, 0, 8)
    000
    John Wible
    Full membership
    00000000
    (0, 0, 0)
    000


    Taxonomic Overview for Matrix 'M27089' (130 Taxa)

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    [1] Thrinaxodon
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    18032932900002
    [2] Massetognathus
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    [3] Probainognathus
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    26624324300002
    [4] Tritylodontids
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    14037236900002
    [5] Pachygenelus
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    20930030000002
    [6] Adelobasileus
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    418919100002
    [7] Sinoconodon
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    16934134000002
    [8] Morganucodon
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    11640139300002
    [9] Megazostrodon
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    14536436400002
    [10] Haldanodon
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    18832132100002
    [11] Castorocauda
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    [12] Eleutherodon
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    452575700002
    [13] Sineleutherus
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    [14] Millsodon
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    [15] Thomasia
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    [16] Haramiyavia
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    [17] Adalatherium
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    [18] Vintana
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    36914014000002
    [19] Vilevolodon
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    [20] Maiopatagium furculiferum
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    [21] Maiopatagium sibiricum
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    485242400002
    [22] Cryoharamiya
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    493161600002
    [23] Cifelliodon
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    39911011000002
    [24] Arboroharamiya jenkinsi
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    33017917900002
    [25] Arboroharamiya allinhopsoni
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    24327126600002
    [26] Xianshou linglong
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    28922222000002
    [27] Xianshou songae
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    30021120900002
    [28] Shenshou
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    23927227000002
    [29] Sharypovoia arimasporum
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    454555500002
    [30] Sharypovoia magna
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    [31] Qishou
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    [32] Rugosodon
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    [33] Kuehneodon
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    [34] Sinobaatar
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    [35] Jeholbaatar
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    [37] Cimolodontans
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    [38] Hadrocodium
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    [39] Shuotherium
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    [40] Pseudotribos
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    [41] Asfaltomylos
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    [42] Ambondro
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    [60] Akidolestes
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    [61] Spalacotherium
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    [62] Zhangheotherium
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    [63] Origolestes
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    [64] Maotherium
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    [65] Dryolestes
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    [66] Henkelotherium
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    [67] Amphitherium
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    [68] Peramus
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    [69] Vincelestes
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    [70] Nanolestes
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    [71] Kielantherium
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    [72] Aegialodon
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    [73] Montanalestes
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    [74] Prokennalestes
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    [75] Murtoilestes
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    [76] Eomaia
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    [77] Juramaia
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    [78] Kennalestes
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    [79] Asioryctes
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    [80] Ukhaatherium
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    [81] Zalambdalestes
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    [83] Aspanlestes
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    [84] Eoungulatum
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    [85] Cimolestes
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    [86] Gypsonictops
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    [87] Protungulatum
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    [88] Erinaceus
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    [89] Leptictis
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    [90] Canis
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    [91] Felis
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    [92] Rattus
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    [93] Oryctolagus
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    [94] Bradypus
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    [95] Tamandua
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    [96] Glyptotherium
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    [97] Dasypus
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    [98] Chaetophractus
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    [99] Euphractus
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    [100] Holoclemensia
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    [101] Sinodelphys
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    [102] Ambolestes
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    [103] Deltatheridium
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    [104] Atokatheridium
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    [105] Sulestes
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    [106] Asiatherium
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    [107] Kokopellia
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    [108] Anchistodelphys
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    [109] Albertatherium
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    [110] Didelphodon
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    [111] Pediomys
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    [112] Turgidodon
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    [113] Mayulestes
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    [114] Pucadelphys
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    [115] Andinodelphys
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    [116] Didelphis
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    [117] Marmosa
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    [118] Caenolestes
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    [119] Dasyurus
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    [120] Perameles
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    [121] Dromiciops
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    [122] Thylacomyidae
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    [128] Pseudocheirus
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    [129] Petauroides
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    [130] Volaticotherium
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    Total project views2821
    Project overview306
    Matrix views206Matrix landing page (155 views); A monotreme-like auditory apparatus in a Middle Jurassic haramiyidan (51 views);
    Specimen list206
    Taxon list1412
    Bibliography73
    Media views427Media search (360 views); M737894 (67 views);
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    Documents list73




    Project downloads

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    Total downloads from project57
    Matrix downloads18A monotreme-like auditory apparatus in a Middle Jurassic haramiyidan (18 downloads);
    Project downloads36
    Media downloads1M737894 (1 download);
    Document downloads2Complete character list in pdf format (2 downloads);