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In our vertebrate ancestors, as in extant reptiles, the three bones that make up the inner ear were instead part of the jaw. Understanding the functional transition of these bones is challenging given their small and delicate nature. Mao\n            <jats:italic>et al.<\/jats:italic>\n            describe a new genus and species of stem therian mammal represented by six well-preserved specimens, seemingly caught as they slept huddled together (see the Perspective by Schultz). The unprecedented preservation reveals a clear transitional stage between the two very different functions of the bones.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Science<\/jats:italic>\n            , this issue p.\n            <jats:related-article xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"doi\" issue=\"6475\" page=\"305\" related-article-type=\"in-this-issue\" vol=\"367\" xlink:href=\"10.1126\/science.aay9220\">305<\/jats:related-article>\n            ; see also p.\n            <jats:related-article xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"doi\" issue=\"6475\" page=\"244\" related-article-type=\"in-this-issue\" vol=\"367\" xlink:href=\"10.1126\/science.aba3808\">244<\/jats:related-article>\n          <\/jats:p>","DOI":"10.1126\/science.aay9220","type":"journal-article","created":{"date-parts":[[2019,12,6]],"date-time":"2019-12-06T00:15:14Z","timestamp":1575591314000},"page":"305-308","source":"Crossref","is-referenced-by-count":54,"title":["Integrated hearing and chewing modules decoupled in a Cretaceous stem therian mammal"],"prefix":"10.1126","volume":"367","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8208-3473","authenticated-orcid":true,"given":"Fangyuan","family":"Mao","sequence":"first","affiliation":[{"name":"Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China."},{"name":"CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China."},{"name":"Division of Paleontology, American Museum of Natural History, New York, NY 10024, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yaoming","family":"Hu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuankui","family":"Li","sequence":"additional","affiliation":[{"name":"Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China."},{"name":"CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7467-6586","authenticated-orcid":true,"given":"Yuanqing","family":"Wang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China."},{"name":"CAS Center for Excellence in Life and Paleoenvironment, Beijing 100044, China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Morgan Hill","family":"Chase","sequence":"additional","affiliation":[{"name":"Microscopy and Imaging Facility, American Museum of Natural History, New York, NY 10024, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3990-2138","authenticated-orcid":true,"given":"Andrew K.","family":"Smith","sequence":"additional","affiliation":[{"name":"Microscopy and Imaging Facility, American Museum of Natural History, New York, NY 10024, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3385-8383","authenticated-orcid":true,"given":"Jin","family":"Meng","sequence":"additional","affiliation":[{"name":"Division of Paleontology, American Museum of Natural History, New York, NY 10024, USA."},{"name":"Earth and Environmental Sciences, Graduate Center, City University of New York, New York, NY 10016, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.1051470404"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1002\/jez.b.21347"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1006\/dbio.2001.0154"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/dvdy.20676"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1242\/dev.01017"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-7580.2012.01526.x"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1111\/joa.12379"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature09921"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ydbio.2013.07.016"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.95.15.8420"},{"key":"e_1_3_2_13_2","unstructured":"A. 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