''Tirasiana'' is a genus of disc-shaped animals from the
Ediacaran period that contains three species: ''T. concentralis'', ''T. coniformis'' and ''T. disciformis,'' all which are distinguished by the complexity of their stepped structure.
Affinity
''Tirasiana'' moulds are thought to be discoidal body fossils of some kind, showing
radial symmetry in them
and with a round nodule in the middle.
See also
*
List of ediacaran genera
*
Aspidella
:Aspidella'' is also a homonym for the mushroom genus ''Saproamanita.
''Aspidella'' is an Ediacaran disk-shaped fossil of uncertain affinity. It is known from the single species ''A. terranovica''.
Morphology
''Aspidella'' consists of disk-s ...
References
{{Taxonbar, from=Q111600089
Cnidarians
Fossil taxa described in 1976
Ediacaran life
Ediacaran
Enigmatic prehistoric animal genera
Aquatic animals