An evaluation of the notaspidean genera Pleurobranchopsis Verrill and Gymnotoplax Pilsbry (Opistobranchia: Pleurobranchinae)
Willan, R.C. (1978). An evaluation of the notaspidean genera Pleurobranchopsis Verrill and Gymnotoplax Pilsbry (Opistobranchia: Pleurobranchinae). J. Conch., Lond. 29: 337-344
In: Journal of Conchology. Conchological Society of Great Britain & Ireland: London. ISSN 0022-0019, more
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