The "ivesheadiomorphs" are a group of fossilised structures known from Ediacaran localities in

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

and Newfoundland. They are considered to be taphomorphs, representing the poorly preserved biological remains of various contemporary

taxa In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular nam ...

such as '' Charnia'', '' Charniodiscus'', ''

Bradgatia ''Bradgatia linfordensis'' is a bush-like Ediacaran fossil. It consists of six or more fronds radiating from a central anchor point at the base. It superficially resembles a compressed cabbage in appearance, although in reality it had a more ...

'', '' Primocandelabrum'', ''

Pectinifrons ''Pectinifrons'' was a rangeomorph, a member of the Ediacara biota found at Mistaken Point, Newfoundland. It was a multi-branched organism with a comb-like appearance. It grew by adding fronds, then inflating them. See also * List of Ediacara ...

'' and others, that were effaced by partial decay by micro-organisms following death on the seafloor before burial by sediment. Ivesheadiomorph structures were previously described as distinct organisms, namely ''Ivesheadia lobata'' ("pizza disk"), ''Blackbrookia oaksi'', ''Shepshedia palmata'' and ''Pseudovendia charnwoodensis''. However, all of these fossils have since been rejected as valid taxa.

References

Ediacaran life Ediacaran Canada Ediacaran Europe {{Ediacaran-stub