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Figure 1 | Frontiers in Zoology

Figure 1

From: A new sensory organ in “primitive” molluscs (Polyplacophora: Lepidopleurida), and its context in the nervous system of chitons

Figure 1

The pallial sensory organs of Lepidopleurida. A., Position of the Schwabe organ in Leptochiton algesirensis, as observed by ES; B., Schematic drawing indicating the sensory organs in the Lepidopleurida (generalised). The lateral organs extend through most of the pallial cavity, as shown, and the branchial organs are at the base of every gill (examples shown in 1B). So, Schwabe organs, indicated with chevrons; lo, lateral organs; bo, branchial organs.

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