Salthill Quarry, Clitheroe, Lancashire (Mississippian, Visean) is a Site of Special Scientific Interest (SSSI), in part based on its diverse fauna of invertebrates, particularly echinoderms. A small collection of crinoid pluricolumnals are described herein, collected from muddy horizons in the Hodder Mudstone Formation to typify the diversity and frequency of their encrusting and boring fauna. These specimens are infested by a range of episkeletozoans, namely a single occurrence of Sutherlandia parasitica (Phillips), four occurrences of Cladochonus sp. and eight of Oichnus paraboloides Bromley. Two variants of the pit (boring or embedment or both) O. paraboloides are recognised: those in which a living crinoid showed a growth reaction to pit formation; and those that did not and which were presumably dead at the time of infestation. The epizoozoan tabulate coral Cladochonus sp. is also common, including specimens intergrown between and within the columnals. Sutherlandia parasitica is relatively uncommon; the only specimen likely infested a dead pluricolumnal on the sea floor. A comparative collection of pluricolumnals infested by Cladochonus beecheri Grabau from the Mississippian Borden Group of the Midwest, USA, showed superior preservation to the Clitheroe Cladochonus sp. Cladochonus beecheri in the Borden Group infested platycrinitid crinoid stems, an association not noted from Salthill Quarry. Similar suites of borings-episkeletozoans, from two other sites – the Visean of Feltrim, Co. Dublin, Ireland, and the Permian of Timor – suggest that these were persistent associations for much of the Late Palaeozoic.

兰开夏郡克利夫罗的Salthill Quarry（密西西比州，密西西比州）是一个具有特殊科学意义的遗址（SSSI），部分原因是其无脊椎动物特别是棘皮动物的种类繁多。本文描述了少量的海百合类多棱柱收集物，这些泥状收集物是从霍德泥岩组的泥泞地层中收集的，以代表它们包壳和枯燥的动物群的多样性和频率。这些标本受到一系列上钩动物的侵扰，即单次发生的Sutherlandia parasitica（Phillips），四次发生的Cladochonus sp。和八只Oichnus paraboloides Bromley。坑（无聊或者嵌入或两者）的两个变体O. paraboloides被认为是：那些活的类oid素对核形成有生长反应的那些；那些没有和据推测在出没时已经死亡的人。附生动物制成表珊瑚Cladochonus sp。也很常见，包括在圆柱体之间和内部互生的标本。Sutherlandia parasitica相对不常见；唯一的标本可能在海底感染了死的胸膜柱。来自美国中西部密西西比州Borden组的Cladochonus beecheri Grabau感染的多棱柱的比较收集显示，其保存能力优于Clitheroe Cladochonus sp。山毛榉在Borden小组中，侵染了platycrinitid的crinoid茎，Salthill Quarry并没有发现这一关联。来自其他两个地点（爱尔兰都柏林的Feltrim的Visean和爱尔兰的帝汶的二叠纪）的类似的无聊表皮动物群落套件表明，它们是晚古生代大部分时间的持久联系。