INVESTIGADORES
OTERO Alejandro
artículos
Título:
Novel insight into the origin of the growth dynamics of sauropod dinosaurs
Autor/es:
CERDA, IGNACIO; ANUSUYA CHINSAMY; DIEGO POL; CECILIA APALDETTI; ALEJANDRO OTERO; RICARDO MART├ŹNEZ; JAIME POWELL
Revista:
PLOS ONE
Editorial:
PUBLIC LIBRARY SCIENCE
Referencias:
Lugar: San Francisco; Año: 2017 vol. 12
ISSN:
1932-6203
Resumen:
Sauropod dinosaurs include the largest terrestrial animals and are considered to have uninterruptedrapid rates of growth, which differs from their more basal relatives, which have aslower cyclical growth. Here we examine the bone microstructure of several sauropodomorphdinosaurs, including basal taxa, as well as the more derived sauropods. Although ourresults agree that the plesiomorphic condition for Sauropodomorpha is cyclical growthdynamics, we found that the hypothesized dichotomy between the growth patterns of basaland more derived sauropodomorphs is not supported. Here, we show that sauropod-likegrowth dynamics of uninterrupted rapid growth also occurred in some basal sauropodomorphs,and that some basal sauropods retained the plesiomorphic cyclical growth patterns.Among the sauropodomorpha it appears that the basal taxa exploited different growthstrategies, but the more derived Eusauropoda successfully utilized rapid, uninterruptedgrowth strategies.