Yuknessia

Yuknessia is a type of green alga from the Cambrian Period.

Description
Yuknessia superficially resembled modern kelp in appearance. Its long fronds were attached to a central body covered in small, conical plates.

Classification
Yuknessia is generally regarded to be a type of green alga of the division Chlorophyta. There is one known species, Y. simplex.

Discovery
Yuknessia was described in 1919 by Charles Doolittle Walcott from the Burgess Shale in British Columbia, Canada. Several other specimens have been found at the Burgess Shale, and other specimens have been found in the Maotianshan and Wheeler Shales of China and Utah, respectively.