Research paper
Presence of Naraoia Walcott, 1912 (Nektaspida, Arthropoda) in the middle Cambrian of Europe (Murero, NE Spain)
RODOLFO GOZALO
Departamento de Botánica y Geología, Universitat de València, c/ Dr. Moliner 50, 46100- Burjassot, Spain. rodolfo.gozalo@uv.es
Corresponding author
Mª EUGENIA DIES ÁLVAREZ
Departamento de Didáctica de las Ciencias Experimentales-IUCA, Universidad de Zaragoza, c/ Valentín Carderera 4, 22003-Huesca, Spain. medies@unizar.es
JOSÉ ANTONIO GÁMEZ VINTANED
Department of Geosciences, Faculty of Sciences & Information Technology, Universiti Teknologi PETRONAS (UTP), 32610 Bandar Seri Iskandar (Tronoh), Perak Darul Ridzuan, Malaysia. jose.gamez@utp.edu.my
JUAN B. CHIRIVELLA
Departamento de Ciencias de la Educación, Universidad CEU Cardenal Herrera. Avda. Seminario s/n, 46113 Moncada, Spain. juamar@iesorriols.com
ELADIO LIÑÁN
Departamento de Ciencias de la Tierra-IUCA. Universidad de Zaragoza, 50009 Zaragoza, Spain. linan@unizar.es
ABSTRACT
The genus Naraoia Walcott, 1912, a Burgess Shale-typefossil known from the lower and middle Cambrian of British Columbia (Canada), Idaho and Utah (USA), as well as from Yunnan and Guizhou provinces (China), is now reported from the middle Cambrian of Murero (Zaragoza, Spain), which is the first record in the Acadobaltic province. The only fragmented specimen found is determined as Naraoia sp., its age being Pardailhania multispinosa Zone (Drumian Stage). This new datum reinforces the hypothesis of the existence of a cosmopolitan faunal substrate in early Cambrian times, which is to some extent refl ected in the mid Cambrian by faunal groups of low evolutionary potential as the family Naraoiidae and other soft-bodied fossil taxa.
Key words: Systematics, Arthropoda, Drumian (Cambrian Series 3), palaeobiogeography.
How to cite: Gozalo, R., Dies Álvarez, Mª.E., Gámez Vintaned, J.A., Chirivella & Liñán, E. 2018. Presence of Naraoia Walcott, 1912 (Nektaspida, Arthropoda) in the middle Cambrian of Europe (Murero, NE Spain). Spanish Journal of Palaeontology, 33 (1), 83-88.
Received 30 January 2018, Accepted 2 March 2018, Published 30 June 2018
https://doi.org/10.7203/sjp.33.1.13243
