Stratotypic section of the Asselian Stage
Abstract
The stratotypic section of the Asselian Stage is considered to be the section between the Assel and Uskalyk rivers, left tributaries of the B. Ik River. The section under the name “Section in the Uksalyk River basin” was first described by V.E. Ruzhentsev in 1951. Our studies have established that the Asselian Stage is characterized in stratotype b. Е. Ružentsev starting from the middle fusulinid zone (Schwgerina moelleri and Pseudofusulina fecunda) of the Asselian Stage, which is confirmed by the fusulinid complex given by V. E. Ružentsev for layers 2 and 4: Pseudofusulina cf. parafecunda Scharn et Scherb., P. conspecta Scham. et Scherb., Schwagerina vulgaris Scherb., Pseudoschwagerina uddeni Wedet Knik ., P. primigena Raus ....
References
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