{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T03:50:10Z","timestamp":1775101810036,"version":"3.50.1"},"reference-count":58,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2019,9,30]],"date-time":"2019-09-30T00:00:00Z","timestamp":1569801600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Morphology"],"published-print":{"date-parts":[[2019,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>We report on the first detailed study of the atlas\u2013axis complex in the lizard clade Dibamidae, a family of poorly known fossorial squamates distributed in tropical or subtropical climates. This skeletal bridge is characterized by several features, such as the complete absence of the first intercentrum or the appearance of the first free cervical rib on the axis (usually less developed in <jats:italic>Dibamus<\/jats:italic> relative to that in <jats:italic>Anelytropsis<\/jats:italic>). Our study shows morphological differences of the atlas\u2013axis complex in the Mexican blind lizard <jats:italic>Anelytropsis<\/jats:italic> relative to those of Asian <jats:italic>Dibamus<\/jats:italic>, the only two known extant genera of this clade. With regard to taxonomy and phylogenetic topology of the Dibamidae within Squamata, a huge conflict exists between morphology versus molecules. The morphology of the atlas\u2013axis complex is therefore compared with several potential sister clades + <jats:italic>Sphenodon<\/jats:italic>. Dibamids share several features with limbless Gekkota, Scincoidea, and Amphisbaenia. The complete absence of the first intercentrum is observed in <jats:italic>Rhineura floridana<\/jats:italic> and in <jats:italic>Ateuchosaurus chinensis<\/jats:italic> as well, and the free rib associated with the synapophyses of the axis is also present in <jats:italic>Acontias meleagris<\/jats:italic>. However, some of these features may result from a limbless, burrowing ecology and thus could represent homoplastic characters. In any case, the morphology of the atlas\u2013axis shows that dibamids share most character states with skinks. Although the atlas\u2013axis complex forms only an additional source of information, this conclusion is consistent with most morphological rather than molecular tree topologies.<\/jats:p>","DOI":"10.1002\/jmor.21064","type":"journal-article","created":{"date-parts":[[2019,10,1]],"date-time":"2019-10-01T04:10:54Z","timestamp":1569903054000},"page":"1777-1797","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["The atlas\u2013axis complex in Dibamidae (Reptilia: Squamata) and their potential relatives: The effect of a fossorial lifestyle on the morphology of this skeletal bridge"],"prefix":"10.1002","volume":"280","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1259-2317","authenticated-orcid":false,"given":"Andrej","family":"\u010cer\u0148ansk\u00fd","sequence":"first","affiliation":[{"name":"Department of Ecology Comenius University in Bratislava  Bratislava Slovakia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Edward L.","family":"Stanley","sequence":"additional","affiliation":[{"name":"Florida Museum of Natural History University of Florida  Gainesville Florida"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,9,30]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.2307\/2412865"},{"key":"e_1_2_7_3_1","first-page":"289","article-title":"Classification of the lizards","volume":"48","author":"Camp C. 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