''Dawsonia campanulata'' is an organic-walled
Palaeozoic
The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon.
The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838
by combining the Greek words ''palaiós'' (, "old") and '' ...
organism of unknown affinity.
It resembles a shell or purse.
References
Incertae sedis
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