Spriggina is an extinct genus of marine animals that lived during the late Ediacaran period, around 550 million years ago. It is known for its distinctive, elongated body and a series of paired structures along its sides, which are thought to be early forms of segmentation. Fossils of Spriggina have been found primarily in Australia and provide important insights into the evolution of early multicellular life. This organism is considered a precursor to more complex life forms, possibly related to the ancestors of modern arthropods and annelids. The unique features of Spriggina help scientists understand the transition from simple to more complex body plans in the history of life on Earth.