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Microstructure and Mineralization of Vertebrate Skeletal Tissues
Origin and evolution of the integumentary skeleton in non‐tetrapod vertebrates
The novelty of the new scenario of integumentary skeletal evolution resides in the demonstration that elasmodine, the main component of elasmoid scales, is odontogenic in origin, and it is proposed that el asmodine is a form of lamellar dentine. Expand
Skin development in bony fish with particular emphasis on collagen deposition in the dermis of the zebrafish (Danio rerio).
- D. Le Guellec, G. Morvan-Dubois, J. Sire
- Biology, Medicine
- The International journal of developmental…
In situ hybridisation experiments reveal that, between 24 and 48 hpf, the collagen matrix is produced by the epidermis only, which suggests that the fibroblasts secrete a still unidentified signalling molecule that downregulates collagen production by the Epidermis. Expand
The integumentary skeleton of tetrapods: origin, evolution, and development
Data support the notion that all osteoderms are derivatives of a neural crest‐derived osteogenic cell population and share a deep homology associated with the skeletogenic competence of the dermis, and that skeletogenesis is comparable with the formation of elasmoid scales. Expand
Scale development in zebrafish (Danio rerio)
- J. Sire, F. Allizard, O. Babiar, J. Bourguignon, A. Quilhac
- Biology, Medicine
- Journal of anatomy
- 1 June 1997
Because of their late formation during ontogeny and of their regular pattern of development, scales in zebrafish represent a good model for further investigations on the general mechanisms of epithelial‐mesenchymal interactions during dermal skeleton development, and in particular for the study of the gene expression patterns. Expand
Phylotranscriptomic consolidation of the jawed vertebrate timetree
- Iker Irisarri, D. Baurain, +8 authors H. Philippe
- Biology, Medicine
- Nature Ecology & Evolution
- 4 July 2017
A new bioinformatic pipeline is developed to assemble large and accurate phylogenomic datasets from RNA sequencing and it is found to be successful and highly cost-effective and to provide a reference framework for the evolutionary history of jawed vertebrates. Expand
Comparative study of lower pharyngeal jaw structure in two phenotypes of Astatoreochromis alluaudi (teleostei: Cichlidae)
Examination of wild‐caught (snail‐eating) fish and specimens experimentally reared on soft food for differences in bone structure in their lower pharyngeal jaw reveals differing growth trajectories, indicating that porosity does not change on one growth trajectory or from one phenotype to another. Expand
Scale development in fish: a review, with description of sonic hedgehog (shh) expression in the zebrafish (Danio rerio).
The formation of the squamation pattern suggests a pre-patterning of the skin before scale initiation, and the potential that scale development offers as a model to study organogenesis mediated by epithelial-mesenchymal interactions is illustrated. Expand
The evolution of milk casein genes from tooth genes before the origin of mammals.
Exon-intron structures and phylogenetic distributions of casein and other SCPP genes, particularly the odontogenic ameloblast-associated gene, the SCPP-Pro-Gln-rich 1 gene, and the follicular dendritic cell secreted peptide gene are investigated, suggesting that contemporary Ca-sensitive casein genes arose from a putative common ancestor, which is referred to as CSN1/2. Expand
Evolutionary and developmental origins of the vertebrate dentition
It is suggested that teeth may have arisen before the origin of jaws, as a result of competent, odontode‐forming ectoderm invading the oropharyngeal cavity through the mouth as well as through the gill slits, interacting with neural crest‐derived mesenchyme. Expand