Artículo
Histology of teeth and tooth attachment in titanosaurs (Dinosauria; Sauropoda)
Fecha de publicación:
01/2016
Editorial:
Academic Press Ltd - Elsevier Science Ltd
Revista:
Cretaceous Research
ISSN:
0195-6671
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Dental histology of periodontal tissues (cementum, periodontal ligament and alveolar bone) has been studied in mammals, crocodylians and some basal tetrapods, but these structures have never been studied in titanosaur sauropods. The goal of this work was to study the structures of dental insertion in Titanosaurs. Like many physiological processes, histological analysis of titanosaur teeth shows hard tissue formation, characterized by a circadian rhythm. From thin sections it was possible to observe microstructures such as incremental lines of von Ebner, dentinal tubules and cross striations, all key to the understanding of developmental tooth dynamics. The structural and histological analyses carried out here on teeth of Late Cretaceous titanosaurs reveals the presence of acellular and cellular cementum, periodontal ligament, and alveolar bone, all structures necessary for a truly thecodont dentition. This is the first time documented for a dinosaur via histological tissue, and is an important finding that will help elucidate aspects of dinosaurian dentition, tooth replacement rate, feeding strategy, metabolism, and general biology.
Palabras clave:
Cementum
,
Dental Histology
,
Dentine
,
Enamel
,
Sauropod
,
Titanosaur
,
Von Ebner Lines
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
García, Rodolfo Andrés; Zurriaguz, Virginia Laura; Histology of teeth and tooth attachment in titanosaurs (Dinosauria; Sauropoda); Academic Press Ltd - Elsevier Science Ltd; Cretaceous Research; 57; 1-2016; 248-256
Compartir
Altmétricas
60 readers on Mendeley