NoffkarkysNoffkarkys is a genus of problematic fossil first found in the Ediacaran Grant Bluff Formation of Central Mount Stuart, Northern Territory, Australia, and another prostrate frond-like fossil. The genus was named in honor of Nora Noffke.DescriptionNoffkarkys is an Ediacaran fossil frond with a fine pattern of rhombic quilts radiating from the base which does not include a rounded holdfast. Like other Ediacaran frond such as Trepassia which also lacks a holdfast, Noffkarkys may have lived prone on the substrate. The fine quilting extends deep into the matrix from the upper side as seen in petrographic thin sections.Biological affinitiesNoffkarkys is a problematic fossil like many Ediacaran genera, and is one of the few vendobionts that persisted into the Cambrian Affinities may be with sea pens or lichens.