|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Aculifera - Halkieriidae
It was assigned to Sachitida by Sepkoski (2002); to Halwaxida by Conway Morris and Caron (2007); and to Halkieriinae by Parkhaev and Demidenko (2010).
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|P. Y. Parkhaev and Y. Demidenko 2010||"Small (up to 1 mm), shortened and widely triangular sclerites. Upper surface of sclerite convex, ornamented by longitudinal ribs. Lower surface flattened or concave, smooth. Lateral surfaces narrow. Sclerites straight or with S-like undulation due to downward bent of base and upward bent of distal end."|