What process have scientists proposed for how Wiwaxia may have acquired sustenance using its underside mouth structure?

Answer

Scraping microbial mats or algae off the seafloor

The morphology of Wiwaxia’s ventral mouth, characterized by its surrounding fleshy lobes and the apparent lack of robust jaws, points toward methods of food acquisition involving contact with the substrate. A leading hypothesis suggests that Wiwaxia utilized this structure to physically scrape up layers of microbial mats or thin algae growing directly on the seafloor sediment. Another related possibility involves the suspension feeding of organic detritus directly from the water column close to the bottom. This generalized, contact-based feeding mechanism stands in contrast to the specialized, active predation seen in some contemporaries, aligning with its overall slow-moving, bottom-dwelling appearance.

What process have scientists proposed for how Wiwaxia may have acquired sustenance using its underside mouth structure?

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Wiwaxia corrugata - Creature of the Cambrian Explosion ~ 505 mya

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animalorganismfossilWiwaxiaCambrian