{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T06:08:40Z","timestamp":1791180520091,"version":"4.1.0"},"reference-count":59,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2008,12,30]],"date-time":"2008-12-30T00:00:00Z","timestamp":1230595200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Morphology"],"published-print":{"date-parts":[[2009,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Chondrichthyan fishes possess visceral skeletons that differ considerably, morphologically, from those of their sister taxon, the osteichthyans. Here, we use histological techniques and whole\u2010mount skeletal preparations to visualize and describe the sequence of visceral skeletal condensation and chondrogenesis in a chondrichthyan, the little skate (<jats:italic>Leucoraja erinacea<\/jats:italic>). We demonstrate that visceral skeletal condensation begins rostrally, with the mandibular arch, and progresses caudally with the hyoid arch and posterior branchial arches condensing soon after. We provide a detailed account of the condensation and chondrogenesis of all major components of the <jats:italic>L. erinacea<\/jats:italic> visceral skeleton and discuss these data in the context of what is known from classical descriptions of chondrichthyan visceral skeletal development. Significant differences exist between the hypobranchial and basibranchial skeleton of <jats:italic>L. erinacea<\/jats:italic> and other chondrichthyan species, and the possible evolutionary and developmental significance of this is considered. We discuss the homology of the chondrichthyan hyoid arch and, based on patterns of mesenchymal condensation, we propose a model of condensation splitting and diversification that may account for the morphological diversification of gnathostome branchial arch derivatives. Finally, we suggest that the unique presence of certain visceral skeletal elements in chondrichthyans make oviparous chondrichthyans an ideal system for addressing questions of endoskeletal axial patterning during development. J. Morphol., 2009. \u00a9 2008 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/jmor.10710","type":"journal-article","created":{"date-parts":[[2009,1,1]],"date-time":"2009-01-01T12:09:38Z","timestamp":1230811778000},"page":"628-643","source":"Crossref","is-referenced-by-count":52,"title":["Chondrogenesis and homology of the visceral skeleton in the little skate, <i>Leucoraja erinacea<\/i> (Chondrichthyes: Batoidea)"],"prefix":"10.1002","volume":"270","author":[{"given":"J. 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