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Figure 1. Specimen of Nisusia attached to the dorsal spine of Wiwaxia, from the “middle” (Series 3, Stage 5) Cambrian Burgess Shale, ROM 61116.. From: Brachiopods hitching a ride: an early case of commensalism in the middle Cambrian Burgess Shale.
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Figure 2. Specimens of Nisusia attached to Wiwaxia, from the “middle” (Series 3, Stage 5) Cambrian Burgess Shale.. From: Brachiopods hitching a ride: an early case of commensalism in the middle Cambrian Burgess Shale.
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