A burrow previously assigned to the ichnotaxon Palaeophycus insignis is redescribed, and a new ichnotaxon Olongichnus solodukhoi n. igen. n. isp is erected for this flattened, slightly curved, multi-oriented, smooth burrow that has a thick lining with internal and external very fine-grained mucuous layers. It shows subrectangular to oblong form in cross section. O. solodukhoi is collected from the lowermost part of the Member D (Seryi Kamen Member, Pechishchi Beds) of the late Kazanian (middle Permian) stratotype section (East European Platform). It occurs in yellowish grey dolostone formed within open shallow-marine environments. O. solodukhoi records combined feeding and dwelling behaviours of a suspension-feeding organism. It could be produced by burrowing organisms with a simple flattened morphology, such as flatworms or polychaetes; however, we favour elongate and ultra-elongate bivalves as the potential tracemakers of the reported burrows.

重新描述了以前分配给鱼鳞鱼的洞穴，以及一个新的鱼鳞鱼Olongichnus solodukhoi n。伊根 。isp是为这种扁平的，略弯曲的，多方向的，光滑的洞穴而竖立的，该洞穴具有厚的衬里以及内部和外部非常细密的粘稠层。它的横截面显示为矩形以下至长方形。Ø。solodukhoi是从喀山晚期（中二叠纪）地层标本部分（东欧平台）的D成员（Seryi Kamen成员，Pechishchi Beds）的最下部收集的。它发生在开放浅海环境中形成的淡黄灰色白云岩中。Ø。独奏记录悬浮饲料生物的混合喂养和居住行为。它可以通过挖洞具有简单扁平形态的生物来生产，例如扁虫或多毛cha；但是，我们倾向于使用细长和超细长的双壳类动物，以作为报道的洞穴的潜在踪迹。