NEW ORDOVICIAN TRILOBITES FROM LENINGRAD AND ARKHANGELSKREGIONS (TRILOBITA: PHACOPIDA: PTERYGOMETOPIDAE; ASAPHIDA:NIELIDAE, NIOBIDAE; AGNOSTIDA: AGNOSTIDAE)

Authors

  • A. V. Krylov Joint-Stock Company “Polargeo”, Vasilevski Island, 24th Line, 3-7, Building 20-B, 199106 St. Petersburg, the Russian Federation Автор

Keywords:

trilobites; Сalyptaulax; Bolbochasmops; Nileus; Niobella; Geragnostus; new species; Ordovician; Dapingian stage; Darriwilian stage; Katian stage

Abstract

In the article four localities and four new trilobite species: Calyptaulax lesnikovae sp. nov., Nileus zhuravlevi
sp. nov., Niobella amdermensis sp. nov. and Geragnostus lawae sp. nov. of the Dapingian—Katian Stages of the
Leningrad and Arkhangelsk regions are described. Trilobite species Bolbochasmops kruegeri (Haller, 1973) has been
found in the Saint-Petersburg region for the first time.

Fig. 24. Table 4. Ref.: 13 titles.

Published

2019-09-01

Issue

Section

БИОЛОГИЧЕСКИЕ НАУКИ Общая биология