Parka decipiens is a Devonian fossil believed to be an early land plant, and is the only species described in the genus Parka. It bears at least a passing resemblance to the alga Coleochaete, but the significance of this similarity is yet to be established.
The fossils of Parka decipiens seem small circular, elliptic or irregular patches reaching a diameter of 0.5-, with a reticulate structure showing small coaly discs. These discs contain a mass of what could be spores.[1] Ultrastructural examination of these spores has shown that they lack the y-shaped trilete mark, a Y-like scar, that is characteristic of Silurian and Devonian pteridophytes.[2]