Sigillina
Sigillina is a genus of small, predatory marine gastropods in the family Cylichnidae. They are commonly referred to as “bubble shells” or “egg shells” due to their smooth, translucent, oval-shaped shells. These shells are typically white or cream-colored and often bear delicate, wavy lines or ridges.
Characteristics
Sigillina species are characterized by their small size, typically ranging from 3 to 10 millimeters in length. Their shells are thin and fragile, with a wide aperture and a small, pointed spire. The surface of the shell is usually smooth, but some species may exhibit fine, wavy lines or ridges. The interior of the shell is often pearly or iridescent.
Environments
Sigillina species are found in a variety of marine environments, including intertidal zones, shallow subtidal areas, and deeper waters. They are often found on sandy or muddy bottoms, among seaweed or other marine plants.
Diet
Sigillina gastropods are carnivores, preying on other small invertebrates, such as worms, crustaceans, and other snails.
Distribution
Species of Sigillina are found in many parts of the world, including the Atlantic, Pacific, and Indian Oceans.
Notable Species
Some notable species of Sigillina include:
- Sigillina interrupta (Say, 1822) - Found along the Atlantic coast of North America.
- Sigillina carinata (Montagu, 1803) - Found in the North Sea and the Atlantic coast of Europe.
- Sigillina radiata (Gould, 1859) - Found in the Indo-Pacific region.
References
For further information, please refer to these reliable sources: