Reg. Charity No. 1168330
A moderately diverse assemblage of micromorphic linguliform brachiopods, including Tapuritreta gribovensis sp. nov., Wahwahlingula? pankovensis sp. nov., Acrothele sp., Anabolotreta? sp., Orbithele? sp. and Stilpnotreta sp., is for the first time described from the Cambrian Karpinsk Formation (Miaolingian, Guzhangian) of the South Island of Novaya Zemlya. The morphology of the metamorphic shell in Acrothele and Wahwahlingula? suggest that both taxa had a single pair of larval setal sacs, similar to the recent discinids, but their metamorphosis was completed only at the end of the pelagic stage and shows that they did have direct development, which is characteristic of all recent lingulides. The biogeographical signature of the new Cambrian brachiopod fauna from Novaya Zemlya is discussed, and the new fauna gives new information on the poorly known Cambrian margins of the Baltica palaeocontinent.
AcknowledgementsLEH is supported by the Swedish Research Council (VR Project no. 2018‐03390) and by a Zhongjian Yang Scholarship from the Department of Geology, Northwest University, Xi'an. LEP is supported by the National Museum of Wales. MGP acknowledges support from the Golestan University, and logistical support from the National Museum of Wales, Cardiff and the Uppsala University. IAK acknowledges support from the St Petersburg State University. ZFZ sincerely acknowledges the National Natural Science Foundation of China (41425008, 41621003, 41720104002 and 41890844) and the 111 Centre (D17013) for the continuous financial support for the palaeobiology group in Xi'an. The Changjiang Scholars (T2016155 to ZFZ) and Wanrenjihua programs (W03020685 to ZFZ) are sincerely acknowledged. Michal Mergle and Uwe Balthasar commented on an earlier draft of this manuscript.
LEH, LEP, MGP, YL and ZFZ are responsible for newly designated brachiopod taxa, while IAK and LEP are responsible for the geological information presented in the paper.