Murchisonellidae

Murchisonellidae is a family of small, marine gastropod molluscs, belonging to the superfamily Vanikoroidea. These snails are characterized by their dextrally coiled, trochiform or conical shells, which are typically thin and translucent. The aperture is usually entire, lacking a siphonal canal or anterior notch. The surface of the shell is often ornamented with axial ribs and/or spiral cords, although some species can be smooth.

The family Murchisonellidae contains several genera, including Murchisonella, Pseudoscales, and Striotectonica. They are found in marine environments worldwide, inhabiting a range of habitats from shallow intertidal zones to deep-sea environments. Their diet and specific ecological roles are not extensively documented for all species, but it is generally believed that they are detritivores or grazers of algae and microorganisms. Reproduction in Murchisonellidae is typically through sexual reproduction, with external fertilization and planktonic larval stages. The taxonomic classification of Murchisonellidae has been subject to revision, with recent molecular studies contributing to a better understanding of their phylogenetic relationships within the Heterobranchia. They are a relatively understudied group, and further research is needed to fully understand their biodiversity, life history, and ecological significance.