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Paleontological Journal

, Volume 52, Issue 1, pp 42–48 | Cite as

A New Cheiracanthid Acanthodian Species from the Aruküla Regional Stage (Middle Devonian, Givetian) of the Eastern Main Devonian Field

  • D. V. Pinakhina
Article

Abstract

A new cheiracanthid acanthodian species, Cheiracanthus flabellicostatus sp. nov., is described based on scales found in the beds of the Aruküla Regional Stage of Siverskiy and Zaitsevo localities of the Leningrad Region. It is distinguished from other members of the genus in the presence of a V-shaped eminence in the medial part of the scale crown and 8–10 large ribs branching into smaller ribs in the anterior part of the crown; large lacunas are observed at crossings of circular and ascending canals in the middle part of the scale neck.

Keywords

Acanthodii Cheiracanthidae Givetian Middle Devonian Main Devonian Field 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.St. Petersburg State UniversitySt. PetersburgRussia

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