Rangea instance of fossil taxon
Rangea is a frond-like Ediacaran fossil with six-fold radial symmetry. It is the type genus of the rangeomorphs.
Rangea was the first complex Precambrian macrofossil named and described anywhere in the world. Rangea was a centimetre- to decimetre-scale frond characterised by a repetitive pattern of self-similar branches and a sessile benthic lifestyle. Fossils are typically preserved as moulds and casts exposing only a leafy petalodium, and the rarity and incompleteness of specimens has made it difficult to reconstruct the three-dimensional (3D) morphology of the entire organism.Fossilized Rangea consists of several vanes. Each vane has a foliate shape with a series of recessed furrows that run outwards at varying angles from a prominent smooth median zone to define a series of chevron-like units called quilts. 
The quilts are arranged in two rows, that is, as long petaliform primary quilts and short lanceolate subsidiary quilts. The subsidiary quilts pinch out a short distance from the median zone as the primary quilts expand whereas the primary quilts extend to the edge of the frond where they taper bluntly. In no specimen can an exact total of primary quilts be counted, on account of either missing areas or incomplete preservation.
The apices of the quilts are sharply delimited by wedge-shaped fields of either smooth or wrinkled relief that give this part of the body a scalloped appearance.
type of example of manifestation of representation of