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Un crustáceo con epípodos del grupo de la corona del Cámbrico Inferior
Xi-guang Zhang1, David J Siveter, Dieter Waloszek
1Key Laboratory for Palaeobiology, Yunnan University, Kunming 650091, China. xgzhang@ynu.edu.cn
Nature
|October 5, 2007
Resumen
El descubrimiento del primer crustáceo indudable del grupo de la corona del Cámbrico temprano proporciona evidencia de la evolución temprana de los artrópodos. Este hallazgo aclara el origen de las epipoditas, una característica clave de los crustáceos.
Área de la Ciencia:
- Paleontología Paleontología.
- Biología evolutiva Biología evolutiva.
- Ciencia de los artrópodos Ciencia de los artrópodos
Sus antecedentes:
- Los crustáceos del grupo de la corona (Eucrustacea) se conocen desde el período Ordoviciano en adelante, con raras ocurrencias en el Cámbrico.
- Phosphatocopina, el grupo hermano de los eucrustaceos, se encuentra en las rocas del Bajo Cámbrico, lo que sugiere la co-ocurrencia del linaje del tallo.
- La presencia de eucrustaceos del grupo corona en el Cámbrico temprano permaneció incierta.
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