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Chunella Gracillima is a species belonging to the genus Chunellae, and the only species belonging to this genus. This prehistoric animal belongs to the family Chanelleidae, a classification of Sea Pens. Sea Pens are a family classification of octocorals- a subspecies of Anthozoa, composed of colonial polyps, and have 8- fold symmetry- and members of the phylum Cnidaria. Sea anemones, sponges, and jellyfish are all also members of the Cnidaria classification umbrella. Although not much is known about Chunella Gracillima itself, there is more accepted knowledge about sea pens that can shed some light on the history of Chunella Gracillima. Sea pens first appeared on the geological timescale in the early Cambrian, with fossils found in the Burgess-Shale. However, due to Sea Pen's similarity to Ediacaran fossils, there is debate as to whether or not they first appeared in the Ediacaran. From this, the conclusion can be drawn that Chunella Gracillima existed in the Cambrian. Sea pens are also known to provide homes for small fish, among other creatures. This may have been a way that the Chunella Gracillima interacted with the environment around it. Visually, the Chunella Gracillima vaguely resembles a Lily of the Valley, with a long stem-like axial polyp with smaller polyps branching off. These “branches” have heads on the end that resemble the head of the Lily of the Valley flower.