2013
DOI: 10.1371/journal.pone.0074597
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Lines of Evidence–Incremental Markings in Molar Enamel of Soay Sheep as Revealed by a Fluorochrome Labeling and Backscattered Electron Imaging Study

Abstract: We studied the structural characteristics and periodicities of regular incremental markings in sheep enamel using fluorochrome injections for vital labeling of forming enamel and backscattered electron imaging in the scanning electron microscope. Microscopic analysis of mandibular first molars revealed the presence of incremental markings with a daily periodicity (laminations) that indicated successive positions of the forming front of interprismatic enamel. In addition to the laminations, incremental markings… Show more

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Cited by 43 publications
(108 citation statements)
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References 54 publications
(93 reference statements)
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“…The high rate of dentine formation recorded in the cuspal crown portions of the sheep molars enables the formation of a hypsodont tooth within a relatively short period of time (< 1 year). Correspondingly, high enamel extension rates have previously been reported for the cuspal crown portions of first molars in sheep and goats (Kierdorf et al, ).…”
Section: Discussionsupporting
confidence: 57%
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“…The high rate of dentine formation recorded in the cuspal crown portions of the sheep molars enables the formation of a hypsodont tooth within a relatively short period of time (< 1 year). Correspondingly, high enamel extension rates have previously been reported for the cuspal crown portions of first molars in sheep and goats (Kierdorf et al, ).…”
Section: Discussionsupporting
confidence: 57%
“…The sheep of the first experimental group (N = 9) were born between 25 March and 12 May 2009. For six of these animals, data on the periodicity of enamel incremental markings and on enamel growth parameters have previously been published (Kierdorf et al, ). The sheep of the second experimental group (N = 2) were born in mid‐April 2012 (exact dates of birth not known, for all calculations we assumed 15 April as the day of birth).…”
Section: Methodsmentioning
confidence: 99%
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“…Laminations seem to be the most prominent growth marks in ungulate enamel. In the light microscope, they appear as incremental lines that follow a course corresponding to that of striae of Retzius in primate enamel (Okada and Mimura, ; Iinuma et al, ; Tafforeau et al, ; Jordana and Köhler, ; Kierdorf et al, ).…”
mentioning
confidence: 99%