Redescription of the Cambrian edrioasteroid <i>Sprinkleoglobus spencensis</i> n. comb. (Wen et al., 2019) from the Spence Shale (Utah, USA)

Abstract The Cambrian edrioasteroid “Totiglobus” spencensis Wen et al., 2019 is redescribed on the basis of a new and exquisitely preserved specimen from the Cambrian Wuliuan of the Spence Shale Member, Langston Formation (Utah). This new occurrence is associated with soft-body preservation of several invertebrate groups and other shelly fossils. The description of “ T. ” spencensis was originally based on a single poorly preserved specimen. As a result, some of its features, such as curvature of the ambulacra and morphology of floor and cover plates, were misinterpreted or unavailable. The new material allows a new placement in Sprinkleoglobus spencensis n. comb. (Wen et al., 2019) on the basis of the general shape of the theca, attachment disc, and biserial flooring plates with podial pores and multiple cover plate series. The attachment disc of the new specimen lies in contact with a trilobite librigena, supporting evidence that this taxon is one of the earliest known examples of attachment to hard, mineralized substrata among Edrioasteroidea.