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False teeth: conodont-vertebrate phylogenetic relationships revisited... To summarize, in conodonts there is low cephalization; presence of simple V-shaped trunk musculature and unique large-crystal albid material in the elements; lack of a dermal skeleton including characteristic vertebrate hard tissues of bone, dentine and enamel; lack of odontodes with bone of attachment and a unique pulp system; lack of segmentally-arranged paraxial elements and dermal elements in median fins, all of which supports neither a vertebrate nor ...
général - core.ac.uk - PDF: www.vliz.be
Periodontal ligament, cementum, and alveolar bone in the oldest herbivorous tetrapods, and their evolutionary significance.... Early work on dental histology of basal amniotes concluded that most possess a simplified tooth attachment in which the tooth root is ankylosed to a pedestal composed of "bone of attachment", which is in turn fused to the jaw....
 PDF: doaj.org
Comparisons of the tooth tissues in a generalized thecodont and subthecodont condition.... ab, alveolar bone; ac, acellular cementum; boa, bone of attachment; cc, cellular cementum; de, dentine; en, enamel; jb, jawbone; pc, pulp cavity; pdl, periodontal ligament; po, primary osteon; sf, Sharpey's fibers; so, secondary...


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