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Variable development of the epipophyseal-prezygapophyseal lamina (eprl) and the divided spinodiapophyseal fossa (sdf) in cervical vertebrae of Erketu ellisoni.

Examples of conjoined eprl and the identification of the fossae they bound are given using the holotypic cervical vertebrae of Erketu ellisoni (IGM 100/1803; D, E) in left lateral view, with diagrammatic representation of laminae and landmarks bounding the sdf. Development of the eprl dividing the sdf is dependent on relative position of landmarks, particularly the separation of the summit of the neural spine (s) and the postzygapophysis (po), as well as the relative positions of the prezygapophysis (pr) and diapophysis (d). Taxa with extremely elongate cervical vertebrae, such as Erketu, may have a slightly different arrangement of connectivity between the eprl, spino-zygapophyseal laminae, and zygapophyseal-diapophyseal laminae, although the presence of the eprl can still be traced.
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Source http://www.ploscollections.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0017114;jsessionid=2A64A6EBC689CEC2ADA8200B32527EA9.ambra01
Author Jeffrey A. Wilson*, Michael D. D'Emic, Takehito Ikejiri, Emile M. Moacdieh, John A. Whitlock
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current03:26, 6 March 2011Thumbnail for version as of 03:26, 6 March 20113,779 × 2,087 (1.82 MB)FunkMonk (talk | contribs){{Information |Description= Variable development of the epipophyseal-prezygapophyseal lamina (eprl) and the divided spinodiapophyseal fossa (sdf) in cervical vertebrae of Erketu ellisoni. Examples of conjoined eprl and the indentification of the fossae t

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