In the literature, numerous accounts exist of microspheres scattered in the pelagic environments of the Tethys realm at the Jurassic-Cretaceous transition. These microspheres are commonly associated with genera such as Cadosina, Colomisphaera, or Stomiosphaera, and attributed to calcareous dinocysts. On the other hand, there are few records of the microsphere, initially described as Cadosina minuta BORZA, 1980, which are arranged in small clusters, likely comprising six cells. This distinctive grouping and its architecture preclude attribution to the calcareous dinocysts. A new genus and a new species (as Octahedronoides tethysianus n.gen., n.sp.) are introduced to define these clusters of leiospheres, which are here reascribed to the acritarchs.

Bruno R.C. Granier

Carnets de géologie (Notebooks on geology)

Carnets de Geologie is an academic journal focused on the field of geology, dedicated to publishing high-quality research papers and review articles covering various aspects of geology, including geological history, petrology, and mineralogy. The journal aims to provide a platform for researchers to communicate and share the latest research findings.

《Carnets de Geologie》是一本专注于地质学领域的学术期刊，致力于发表高质量的研究论文和综述文章，涵盖地质学的各个方面，包括地质历史、岩石学、矿物学等。期刊旨在为研究人员提供一个交流和分享最新研究成果的平台。

Category	Quartile
地球科学	4
地球科学, 地质学	3
地球科学, 古生物学	3

Octahedronoides tethysianus n.gen., n.sp., enigmatic clusters of microspheres at the Jurassic-Cretaceous transition

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