Lenticulinidae

Lenticulinidae is a family of foraminifera, which are single-celled organisms belonging to the order Allogromiida. These marine protozoans are characterized by their coiled, lenticular (lens-shaped) tests, or shells. The test is typically composed of organic material, though some species may incorporate agglutinated particles. The coiling is usually planispiral, meaning the chambers are added in a single plane, forming a flat spiral. The aperture, or opening through which the pseudopodia extend, is usually located at the periphery of the final chamber.

Lenticulinidae are found in a wide range of marine environments, from shallow coastal waters to the deep sea. They are benthic organisms, living on the seafloor or attached to submerged objects. Their diet consists of small organic particles and microorganisms. Reproduction is primarily asexual through binary fission. Fossil records indicate that lenticulinids have existed since the Jurassic period, and their tests are often preserved in sedimentary rocks, making them useful for biostratigraphy and paleoenvironmental studies. The classification within Lenticulinidae is based on the coiling pattern, the shape of the test, and the characteristics of the aperture.