NDLI: Ontogeny of the skull of Melanosuchus niger (Crocodylia: Alligatoridae)

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Ontogeny of the skull of Melanosuchus niger (Crocodylia: Alligatoridae)

Content Provider	Semantic Scholar
Author	Vieira, Lucélia Gonçalves Santos, André L. S. Hirano, Líria Queiroz Luz Menezes-Reis, Lorena Tannús Mendonça, Juliana Dos Santos Sebben, Antônio
Copyright Year	2019
Abstract	We describe the formation of the chondrocranium and the ossification pattern of the skull of Melanosuchus niger (Spix 1825). The embryos were cleared and double-stained by alizarin red and alcian blue. Additionally, they were visualized by histological HE staining, and computed tomography imaging. The chondrocranium of M. niger comprised the nasal capsule, orbitotemporal and optic-occipital regions. Its development began in stage nine, with the chondrification of the acrochordal cartilage, trabeculae, and mandibular cartilage. The optic capsule was formed in the caudolateral portion of the chondrocranium in stage 13. The basal plate appeared in stage 14, with foramina for the hypoglossal. The chondrocranium was completely formed in stage 16. The first osteogenic events were noted at stage 13, in the bones, maxilla, jugal, postorbital, and pterygoid. The quadratojugal, prefrontal, frontal, and squamosal began their ossification in stage 14. The parietal bone began to ossify only in stage 20. The basispheno.
Starting Page	142
Ending Page	155
Page Count	14
File Format	PDF HTM / HTML
DOI	10.1139/cjz-2018-0076
Volume Number	97
Alternate Webpage(s)	https://tspace.library.utoronto.ca/bitstream/1807/93546/1/cjz-2018-0076.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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