Abstract
The peripheral olfactory organ of Chimaeridae is a lamellar organ. The sensory epithelium is a pseudostratified epithelium with ciliated supporting cells. The olfactory neurons have a rod‐shaped appendage or microvilli at their dendritic pole, and they can be highlighted by using, as a marker, an antibody against the heterotrimeric G protein o‐type. The sensory epithelium lacks proper mucous cells and all the supporting cells show mucous granule in their apical part.
The canals of the lateral line are open grooves, with supporting C‐shaped rings of cartilgae, and they can be narrow or wide. The wide grooves present expanded dilations and they are autapomorphic character of the family. In the grooves, there are elongated neuromasts.