New Jurassic mammaliaform sheds light on early evolution of mammal-like hyoid bones

Author:

Zhou Chang-Fu12ORCID,Bhullar Bhart-Anjan S.3ORCID,Neander April I.4ORCID,Martin Thomas5ORCID,Luo Zhe-Xi4ORCID

Affiliation:

1. Paleontological Museum of Liaoning, Shenyang Normal University, Shenyang Liaoning 110034, China.

2. College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.

3. Department of Geology and Geophysics and Peabody Museum of Natural History, Yale University, New Haven, CT 06511, USA.

4. Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL 60637, USA.

5. Section Paleontology, Institute of Geosciences, Rheinische Friedrich-Wilhelms-Universität Bonn, 53115 Bonn, Germany.

Abstract

Early suckler? One trait that is unique to mammals is milk suckling. Suckling requires the presence of stability and motion in the throat, both of which require a complex hyoid apparatus. Zhou et al. describe a mammaliform docodontan fossil from the Jurassic that was preserved with a nearly intact hyoid (see the Perspective by Hoffmann and Krause). The structure is complex and saddle shaped, like that seen in modern mammals, suggesting that a muscularized throat was present before the development of mammals. Science , this issue p. 276 ; see also p. 222

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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