Sachitida He, 1980

Wrona, Ryszard, 2004, Cambrian microfossils from glacial erratics of King George Island, Antarctica, Acta Palaeontologica Polonica 49 (1), pp. 13-56 : 28

Order Sachitida He, 1980 in Yin et al. 1980 Family Halkieriidae Poulsen, 1967

Genera included: Halkieria Poulsen, 1967 ; Sinosachites He, 1980 in Yin et al. 1980.

Remarks.—This is a group of bilaterally symmetrical metazoans with a slug−like body, armoured by different types of imbricating sclerites: palmate on the dorsal side, cultrate on the lateral sides and siculate or/and spiniform on the ventrolateral sides. Despite discovery of unique, well−preserved articulated sclerite arrays in compressed complete animals ( Conway Morris and Peel 1990, 1995), the precise evolutionary position of the Halkieriidae remains unresolved. For diagnosis see Qian and Bengtson (1989), Conway Morris in Bengtson et al. (1990) and Conway Morris and Peel (1995).