{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,7]],"date-time":"2025-10-07T05:33:35Z","timestamp":1759815215914,"version":"3.37.3"},"reference-count":48,"publisher":"The Royal Society","issue":"11","license":[{"start":{"date-parts":[[2019,11,1]],"date-time":"2019-11-01T00:00:00Z","timestamp":1572566400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/royalsociety.org\/journals\/ethics-policies\/data-sharing-mining\/"}],"funder":[{"DOI":"10.13039\/501100004219","name":"Paul Scherrer Institut","doi-asserted-by":"crossref","award":["20171476"],"award-info":[{"award-number":["20171476"]}],"id":[{"id":"10.13039\/501100004219","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100003246","name":"Nederlandse Organisatie voor Wetenschappelijk Onderzoek","doi-asserted-by":"crossref","award":["864.14.009"],"award-info":[{"award-number":["864.14.009"]}],"id":[{"id":"10.13039\/501100003246","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100000270","name":"Natural Environment Research Council","doi-asserted-by":"crossref","award":["NE\/G016623\/1"],"award-info":[{"award-number":["NE\/G016623\/1"]}],"id":[{"id":"10.13039\/501100000270","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["royalsocietypublishing.org"],"crossmark-restriction":true},"short-container-title":["R. Soc. open sci."],"published-print":{"date-parts":[[2019,11]]},"abstract":"<jats:p>\n            Teeth were an important innovation in vertebrate evolution but basic aspects of early dental evolution remain poorly understood. Teeth differ from other odontode organs, like scales, in their organized, sequential pattern of replacement. However, tooth replacement patterns also vary between the major groups of jawed vertebrates. Although tooth replacement in stem-osteichthyans and extant species has been intensively studied it has been difficult to resolve scenarios for the evolution of osteichthyan tooth replacement because of a dearth of evidence from living and fossil sarcopterygian fishes. Here we provide new anatomical data informing patterns of tooth replacement in the Devonian sarcopterygian fishes\n            <jats:italic>Onychodu<\/jats:italic>\n            s,\n            <jats:italic>Eusthenopteron<\/jats:italic>\n            and\n            <jats:italic>Tiktaalik<\/jats:italic>\n            and the living coelacanth\n            <jats:italic>Latimeria<\/jats:italic>\n            based on microfocus- and synchrotron radiation-based X-ray microtomography. Early sarcopterygians generated replacement teeth on the jaw surface in a pattern similar to stem-osteichthyans, with damaged teeth resorbed and replacement teeth developed on the surface of the bone. However, resorption grades and development of replacement teeth vary spatially and temporally within the jaw. Particularly in\n            <jats:italic>Onychodus<\/jats:italic>\n            , where teeth were also shed through anterior rotation and resorption of bone at the base of the parasymphyseal tooth whorl, with new teeth added posteriorly. As tooth whorls are also present in more stem-osteichthyans, and statodont tooth whorls are present among acanthodians (putative stem-chondrichthyans), rotational replacement of the anterior dentition may be a stem-osteichthyan character. Our results suggest a more complex evolutionary history of tooth replacement.\n          <\/jats:p>","DOI":"10.1098\/rsos.191173","type":"journal-article","created":{"date-parts":[[2019,11,13]],"date-time":"2019-11-13T08:06:14Z","timestamp":1573632374000},"page":"191173","update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":18,"title":["Tooth replacement in early sarcopterygians"],"prefix":"10.1098","volume":"6","author":[{"given":"Mark","family":"Doeland","sequence":"first","affiliation":[{"name":"Naturalis Biodiversity Center, Postbus 9517, 2300 RA Leiden, The Netherlands"},{"name":"Institute of Biology, Universiteit Leiden, Silviusweg 72, 2333 BE Leiden, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aidan M. C.","family":"Couzens","sequence":"additional","affiliation":[{"name":"Naturalis Biodiversity Center, Postbus 9517, 2300 RA Leiden, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3116-7463","authenticated-orcid":true,"given":"Philip C. J.","family":"Donoghue","sequence":"additional","affiliation":[{"name":"School of Earth Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, Bristol BS8 1TQ, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7254-837X","authenticated-orcid":true,"given":"Martin","family":"R\u00fccklin","sequence":"additional","affiliation":[{"name":"Naturalis Biodiversity Center, Postbus 9517, 2300 RA Leiden, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"175","published-online":{"date-parts":[[2019,11,13]]},"reference":[{"key":"e_1_3_6_2_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature14438"},{"key":"e_1_3_6_3_2","doi-asserted-by":"publisher","DOI":"10.1111\/ede.12099"},{"key":"e_1_3_6_4_2","first-page":"331","article-title":"Ueber Bau und Entwickelung der Placoidschuppen und der Z\u00e4hne der Selachier","volume":"8","author":"Hertwig O","year":"1874","journal-title":"Jenaische Zeitschrift f\u00fcr Naturwissenschaft"},{"key":"e_1_3_6_5_2","first-page":"53","volume-title":"Problems in vertebrate evolution","author":"\u00d8rvig T","year":"1977"},{"key":"e_1_3_6_6_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-1-4615-6968-8_7"},{"key":"e_1_3_6_7_2","first-page":"223","volume-title":"Major events in early vertebrate evolution","author":"Smith MM","year":"2001"},{"key":"e_1_3_6_8_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature19812"},{"key":"e_1_3_6_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.semcdb.2013.12.013"},{"key":"e_1_3_6_10_2","doi-asserted-by":"publisher","DOI":"10.1002\/jez.b.22577"},{"key":"e_1_3_6_11_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.1079623"},{"key":"e_1_3_6_12_2","doi-asserted-by":"publisher","DOI":"10.1017\/S1464793104006682"},{"key":"e_1_3_6_13_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature11555"},{"key":"e_1_3_6_14_2","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.1051320402"},{"key":"e_1_3_6_15_2","doi-asserted-by":"publisher","DOI":"10.1002\/jez.b.21091"},{"key":"e_1_3_6_16_2","doi-asserted-by":"publisher","DOI":"10.1643\/0045-8511(2001)001[0035:PODRTI]2.0.CO;2"},{"key":"e_1_3_6_17_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0722.1998.tb02211.x"},{"key":"e_1_3_6_18_2","doi-asserted-by":"publisher","DOI":"10.1080\/03008200290000925"},{"key":"e_1_3_6_19_2","doi-asserted-by":"publisher","DOI":"10.1098\/rsos.161084"},{"key":"e_1_3_6_20_2","doi-asserted-by":"publisher","DOI":"10.1017\/S0263593300001309"},{"key":"e_1_3_6_21_2","first-page":"1","article-title":"Morphology, phylogeny and taxonomy of osteolepiform fish","volume":"61","author":"Borgen UJ","year":"2001","journal-title":"Fossils and Strata"},{"key":"e_1_3_6_22_2","doi-asserted-by":"publisher","DOI":"10.1671\/0272-4634(2001)021[0815:OTROPA]2.0.CO;2"},{"key":"e_1_3_6_23_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature05989"},{"volume-title":"Basic structure and evolution of vertebrates","year":"1980","author":"Jarvik E","key":"e_1_3_6_24_2"},{"key":"e_1_3_6_25_2","doi-asserted-by":"publisher","DOI":"10.24199\/j.mmv.2010.67.04"},{"key":"e_1_3_6_26_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jsb.2015.02.005"},{"key":"e_1_3_6_27_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.tree.2014.04.004"},{"key":"e_1_3_6_28_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature04890"},{"key":"e_1_3_6_29_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.2436193"},{"key":"e_1_3_6_30_2","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.2017.0194"},{"key":"e_1_3_6_31_2","first-page":"64","article-title":"Die Faltenz\u00e4hne der rhipidistiiden Crossopterygier, der Tetrapoden und der Actinopterygier-Gattung Lepisosteus","volume":"65","author":"Schultze H-P","year":"1969","journal-title":"Palaeontogr. 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