Enigmatic Scenella Burgess Shale Mollusc Fossil

Scenella amii

Phylum Mollusca (?), Order Helcionellida, Family Scenellidae

Geologic Time: Early Cambrian (~520 million years ago)

Size: 6 mm

Fossil Site: Burgess Shale, Stephen Formation, Burgess Pass, British Columbia, Canada

Scenella Burgess Shale Mollusc FossilThe domed shell of Scenella is a relatively common fossil of the Burgess Shale Fauna that was assigned by Walcott to the monoplacophoran genus Scenella. More recently, some Scenella have been reinterpreted as a by-the-wind sailor or floating coelenterate much like the Portuguese Man-of-War.

Also see: Living fossils

click fossil pictures to enlarge


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