TRIANGULARIA GEN. NOV. AND OTHER NEW CARBONIFEROUS SPIRIFERIDS AND SPIRIFERINIDS FROM EURASIA

Abstract

A new genus and two new species of the Late Visean to Serpukhovian spiriferids from the superfamily Paeckelmanelloidea - Triangularia tumida (type species) and T. paratriangularis - are described; the description is based on species similar to Spirifer triangularis Sowerby, 1827. In addition, a new Upper Carboniferous species Avisyrinx ukrainica from the Donets Basin and a new Bashkirian spiriferinid Crenispirifer donbassicus are described.