Ivesheadiomorphs
Encyclopedia
The Ivesheadiomorphs or pizza disks are a group of Ediacaran fossils that represent the remains of such taxa as Charnia
and Charniodiscus
, effaced by partial decay by micro-organisms.
Charnia
Charnia is the genus name given to a frond-like Ediacaran lifeform with segmented ridges branching alternately to the right and left from a zig-zag medial suture. The genus Charnia was named after Charnwood Forest in Leicestershire, England, where the first fossilised specimen was found.- Diversity...
and Charniodiscus
Charniodiscus
Charniodiscus is an Ediacaran fossil that was probably a stationary filter feeder that lived anchored to a sandy sea bed. The organism had a holdfast, stalk and frond. The holdfast was bulbous shaped, and the stalk was flexible. The frond was segmented and had a pointed tip...
, effaced by partial decay by micro-organisms.