👉 Microsphera, also known as a microspire, is a small, spherical-shaped bacteria. It is commonly found in the guts of certain types of animals such as crows and bats. The spire of the microspheroid can be up to 10 micrometers (micrometers) long and 2-3 micrometers wide. Microspheras are important for their role in the reproduction cycle of some species, particularly those that feed on fungi or