Scenella

Scenella is an extinct genus of fossil invertebrate animal which is generally considered to be a mollusc; at various times it has been suggested that this genus belongs with the gastropods, the monoplacophorans, or the helcionellids, although no firm association with any of these classes has been established.

[1] However the specimens showing this scarring have not been convincingly shown to belong to the genus Scenella.

[7] The shell of Scenella is elongated along its anterior-posterior axis, and comprises concentric rings around a conical central peak.

[1] They are usually preserved point-upwards, with their long axes consistently oriented; this probably represents their most stable position under their depositional current.

The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005[3] categorizes Scenellidae in the superfamilia Scenelloidea within the Paleozoic molluscs of uncertain systematic position.

Scenella from the Burgess Shale , Middle Cambrian, Walcott Quarry, near Field, British Columbia