Emarginula
Emarginula is a genus of small, marine snails in the family Emarginulidae, which are commonly known as slit shells or keyhole limpets. These are a group of minute to small limpet-like marine gastropods that are found in various marine habitats around the world. The genus Emarginula is characterized by its unique shell morphology, specifically the presence of a slit or notch on the anterior margin of the shell.
Common Names
Emarginula species are commonly referred to as slit shells or keyhole limpets due to the distinctive slit or notch present on their shells.
Characteristics
Members of the genus Emarginula exhibit a number of shared characteristics:
- Shell Shape: The shell is typically conical or dome-shaped with a low, rounded apex.
- Slit or Notch: The defining feature of Emarginula is the presence of a slit or notch on the anterior margin of the shell. This slit serves as an outlet for water and waste products.
- Internal Structure: Emarginula species have a simple internal anatomy with a well-developed foot for locomotion.
- Size: Most Emarginula species are relatively small, typically ranging in size from a few millimeters to a centimeter or two.
Environments
Emarginula species are found in a variety of marine habitats, primarily in intertidal and subtidal zones. They are commonly found attached to rocks, algae, and other hard substrates. Some species may also be found in deeper waters.
References
For more detailed information about Emarginula, consult these reliable sources: