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Un dinosaurio heterodontosaurídeo del Cretácico temprano con estructuras integumentarias filamentosas
Xiao-Ting Zheng1, Hai-Lu You, Xing Xu
1Shandong Tianyu Museum of Nature, Lianhuashan Road West, Pingyi, Shandong, 273300, China.
Nature
|March 20, 2009
Resumen
Un nuevo dinosaurio, Tianyulong confuciusi, descubierto en China, revela estructuras filamentosas de la piel. Este hallazgo amplía el rango conocido de heterodontosauridos a Asia y al período Cretácico Temprano.
Área de la Ciencia:
- Paleontología Paleontología.
- Dinosauria es el género de los dinosaurios.
- Ornithischiaia es una especie de ornitisquios.
Sus antecedentes:
- Heterodontosauridae, un clado de pequeños dinosaurios ornitisquios, tiene una posición filogenética poco comprendida.
- Anteriormente, los fósiles de heterodontosaurios se encontraban principalmente en el Jurásico Temprano de África.
Objetivo del estudio:
- Para describir una nueva especie de heterodontosauridos, Tianyulong confuciusi, de China.
- Para investigar la distribución geográfica y temporal de los Heterodontosauridae.
Principales métodos:
- Descubrimiento y análisis de fósiles.
- El análisis filogenético.
- La anatomía comparada es una anatomía comparada.
Principales resultados:
- El descubrimiento de Tianyulong confuciusi en el Cretácico Temprano de China, extendiendo el rango de los heterodontosaurios a Asia.
- Confirmación de la presencia de Heterodontosauridae en el Cretácico temprano.
- Identificación de estructuras integramentales filamentosas únicas en el Tianyulong confuciusi.
Conclusiones:
- Tianyulong confuciusi representa el primer dinosaurio ornitisquiano confirmado con estructuras integumentarias filamentosas.
- El descubrimiento amplía la distribución geográfica y temporal conocida de los Heterodontosauridae.
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