Thalassinoides paradoxicus (Woodward, 1830) is a prevalent and frequently reported ichnotaxon, but given its early erection and subsequent revisions, it now is poorly understood and lumps together three different kinds of trace fossils having distinct characteristics. A clear definition (i.e., diagnosis) of each individual component is crucial for ichnotaxonomic stability and the application of these ichnotaxa in environmental and evolutionary interpretations. Originally described and figured as the zoophyte Alcyonia (soft-bodied coral) from the Upper Greensand (Lower Cretaceous) of southern England over 200 years ago, it became the type of Spongia paradoxica Woodward, 1830. This type was mostly ignored by subsequent workers, and instead branched burrows from the Upper Cretaceous Chalk were regarded of being representative for S. paradoxica, a form that became typified with a neotype as Thalassinoides paradoxicus Kennedy, 1967. Furthermore, irregularly branched firm- to hardground burrows from the same strata were also called T. paradoxicus but rather belong to Balanoglossites triadicus Mägdefrau, 1932. A taxonomic discussion of the involved ichnotaxa is presented, resulting in the erection of the new ichnogenus Lamellaecylindrica, including L. paradoxica (Woodward, 1830), and the differentiation of the ichnospecies Thalassinoides paradoxicus Kennedy, 1967 and Balanoglossites triadicus Mägdefrau, 1932. Each of these ichnotaxa is a common constituent of a specific lithofacies and environment.

Thalassinoides paradoxicus（伍德沃德，1830年）是一种普遍存在且经常报道的鱼腥紫杉类，但由于其早期勃起和随后的修订，目前人们对其了解甚少，并且将具有不同特征的三种不同类型的痕迹化石综合在一起。每个单独组分的明确定义（即诊断）对于鱼类分类学的稳定性以及这些鱼类分类学在环境和进化解释中的应用至关重要。最初被描述为200多年前来自英格兰南部上部格林沙（下白垩统）的共生藻类Alcyonia（软体动物），后来成为Spongia paradoxica的类型伍德沃德（Woodward），1830年。随后的工作人员大多忽略了这种类型，取而代之的是白垩纪上层白垩纪的分支洞穴，代表了S. paradoxica，这是一种典型的新类型，如Thalassinoides paradoxicus Kennedy，1967年。来自同一地层的分支硬实洞穴到硬地洞穴也被称为拟寄生T. paradoxicus，但属于Balanoglossites triadicusMägdefrau，1932年。对所涉及的鱼鳞目分类学进行了分类讨论，从而导致了新的鱼鳞纲Lamellaecylindrica的建立，其中包括L. paradoxica。（伍德沃德，1830年），以及鱼类物种的分化Thalassinoides paradoxicus Kennedy（1967年）和Balanoglossites triadicusMägdefrau（1932年）。这些鱼纲是特定岩相和环境的共同组成部分。