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  1. No Access

    Article

    The origin of placental mammal life histories

    After the end-Cretaceous extinction, placental mammals quickly diversified1, occupied key ecological niches2,3 and increased in size4,5, but this last was not true of other therians6. The uniquely extended gestat...

    Gregory F. Funston, Paige E. dePolo, Jakub T. Sliwinski, Matthew Dumont… in Nature (2022)

  2. No Access

    Article

    The Narial Anatomy of Extinct and Extant Sloths (Xenarthra, Folivora): Osteological Anomalies in the Extant Two-Toed Sloth Choloepus

    The skeletal anatomy of the anterior narial region in mammals is complex, comprised of several bony and cartilaginous elements. Because it includes many cartilaginous components, preservation of this area in e...

    Timothy J. Gaudin, Kaitlyn M. Smith, John R. Wible in Journal of Mammalian Evolution (2021)

  3. No Access

    Article

    A monotreme-like auditory apparatus in a Middle Jurassic haramiyidan

    Among extant vertebrates, mammals are distinguished by having a chain of three auditory ossicles (the malleus, incus and stapes) that transduce sound waves and promote an increased range of audible—especially ...

    Junyou Wang, John R. Wible, Bin Guo, Sarah L. Shelley, Han Hu, Shundong Bi in Nature (2021)

  4. No Access

    Article

    Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity

    The fossil record of mammaliaforms (mammals and their closest relatives) of the Mesozoic era from the southern supercontinent Gondwana is far less extensive than that from its northern counterpart, Laurasia1,2. A...

    David W. Krause, Simone Hoffmann, Yaoming Hu, John R. Wible, Guillermo W. Rougier… in Nature (2020)

  5. No Access

    Article

    An Early Cretaceous eutherian and the placental–marsupial dichotomy

    Molecular estimates of the divergence of placental and marsupial mammals and their broader clades (Eutheria and Metatheria, respectively) fall primarily in the Jurassic period. Supporting these estimates, Juramai...

    Shundong Bi, **aoting Zheng, **aoli Wang, Natalie E. Cignetti, Shiling Yang… in Nature (2018)

  6. No Access

    Article

    First cranial remains of a gondwanatherian mammal reveal remarkable mosaicism

    Previously known only from isolated teeth and lower jaw fragments recovered from the Cretaceous and Palaeogene of the Southern Hemisphere, the Gondwanatheria constitute the most poorly known of all major mamma...

    David W. Krause, Simone Hoffmann, John R. Wible, E. Christopher Kirk… in Nature (2014)

  7. No Access

    Article

    The Phylogeny of Living and Extinct Pangolins (Mammalia, Pholidota) and Associated Taxa: A Morphology Based Analysis

    The present study was undertaken in order to effect a comprehensive phylogenetic analysis of the order Pholidota, examining seven of the eight currently recognized extant species (absent is Manis culionensis, for...

    Timothy J. Gaudin, Robert J. Emry, John R. Wible in Journal of Mammalian Evolution (2009)

  8. No Access

    Article

    The Ear Region of the Pen-tailed Treeshrew, Ptilocercus lowii Gray, 1848 (Placentalia, Scandentia, Ptilocercidae)

    The ear region of the pen-tailed treeshrew, Ptilocercus lowii Gray, 1848 (Scandentia, Ptilocercidae), is described and illustrated in detail based on five museum specimens from the National Museum of Natural Hist...

    John R. Wible in Journal of Mammalian Evolution (2009)

  9. No Access

    Article

    The earliest known eutherian mammal

    The skeleton of a eutherian (placental) mammal has been discovered from the Lower Cretaceous Yixian Formation of northeastern China. We estimate its age to be about 125 million years (Myr), extending the date ...

    Qiang Ji, Zhe-** Luo, Chong-** Yuan, John R. Wible, Jian-** Zhang… in Nature (2002)

  10. No Access

    Article

    The Entotympanic of Pangolins and the Phylogeny of the Pholidota (Mammalia)

    Entotympanics are independent elements present in the auditory bullae of various eutherians. An entotympanic has been reported for extant pangolins of the Order Pholidota, but the actual distribution of this e...

    Timothy J. Gaudin, John R. Wible in Journal of Mammalian Evolution (1999)

  11. No Access

    Article

    Implications of Deltatheridium specimens for early marsupial history

    We describe here two new specimens of the mammal Deltatheridium pretrituberculare from the Late Cretaceous period of Mongolia. These specimens provide information on tooth replacement in basal therian mammals and...

    Guillermo W. Rougier, John R. Wible, Michael J. Novacek in Nature (1998)

  12. No Access

    Article

    Epipubic bones in eutherian mammals from the Late Cretaceous of Mongolia

    An important transformation in the evolution of mammals was the loss of the epipubic bones. These are elements projecting anteriorly from the pelvic girdle into the abdominal region in a variety of Mesozoic ma...

    Michael J. Novacek, Guillermo W. Rougier, John R. Wible, Malcolm C. McKenna… in Nature (1997)

  13. No Access

    Article

    Chiropteran vomeronasal complex and the interfamilial relationships of bats

    Within the extant orders of living mammals, the distribution of the vomeronasal organ (VNO) and associated structures is very stable, being universally present in the vast majority or universally absent in cet...

    John R. Wible, Kunwar P. Bhatnagar in Journal of Mammalian Evolution (1996)

  14. No Access

    Article

    Reexamination of the morphological evidence for the cohort Epitheria (Mammalia, Eutheria)

    Novacek and co-workers recognized a monophyletic clade Epitheria, comprising all eutherians except edentates and the extinct palaeoryctoids, on the basis of two synapomorphies: a stirrupshaped stapes and a for...

    Timothy J. Gaudin, John R. Wible, James A. Hopson… in Journal of Mammalian Evolution (1996)

  15. Article

    Multituberculate phylogeny

    Guillermo W. Rougler, John R. Wible, Michael J. Novacek in Nature (1996)

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  16. No Access

    Article

    Cranial circulation of the pen-tailed tree shrewPtilocercus lowii and relationships of Scandentia

    The major cranial arteries and veins are described for a 30-mm crown-rump length fetus of the pen-tailed tree shrewPtilocercus lowii, and comparisons are made with cranial vessels reported in the tree shrewTupaia

    John R. Wible, Ulrich Zeller in Journal of Mammalian Evolution (1994)

  17. No Access

    Chapter

    Ontogeny of the Tympanic Floor and Roof in Archontans

    To say that the middle ear and surrounding basicranium have played a critical role in current views of mammalian phylogeny is not an overstatement. Nearly every recent morphological treatment of phylogenetic r...

    John R. Wible, James R. Martin in Primates and Their Relatives in Phylogenetic Perspective (1993)

  18. No Access

    Chapter

    Basicranial Evidence for Early Mammal Phylogeny

    The distribution of thirty-eight basicranial characters is considered among monotremes, marsupials, placentals, and the following extinct taxa—Tritheledontidae, Tritylodontidae, Sinoconodon, Morganucodontidae, Ha...

    John R. Wible, James A. Hopson in Mammal Phylogeny (1993)

  19. No Access

    Article

    Morphogenesis of the mammalian skull

    John R. Wible in International Journal of Primatology (1988)