The oldest bivalved arthropods from the early Cambrian of East Gondwana: Systematics, biostratigraphy and biogeography

T. P. Topper, C. B. Skovsted, G. A. Brock, and J. R. Paterson

2011

Article

Gondwana Research 310-326

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Taxa discussed in this work:

• Quadricona
• Quadricona madonnae

Taxonomy:

• Quadricona madonnae belongs to Quadricona - Topper et al. (2011)