The Ordovician ostracodes established by Aurel Krause, Part II

Ingelore Hinz-Schallreuter,Roger Schallreuter

doi:10.1002/mmng.201300007

Abstract

The revision of ostracodes originally established by Aurel Krause is continued and finished with the description of the following species: Primitia distans, P. elongata, P. cincta, P. excavata, P. papillata, P. plicata, P. schmidtii, Strepula limbata, S. simplex, Entomis obliqua, E. plicata, E. sigma, E. sigma ornata, E. simplex, E. trilobata, Beyrichia erratica, B. erratica granulosa, B. erratica acuta, B. harpa, and B. marchica lata. Three of these species are younger primary homonyms. For Beyrichia erratica granulosa Krause, 1891 a respective decision of the ICZN according to art. 23.9.5 is presently unnecessary, because it has an older synonym (Beyrichia grewingkii Bock, 1867), and Primitia excavata Krause, 1892 has a younger synonym (Laccochilina paucigranosa Jaanusson, 1957). The third homonym, Beyrichia marchica lata Krause, 1891, is considered as a nomen protectum. Entomis sigma ornata, and E. plicata are presently considered as nomina dubia. Since the type material of the three species P. distans, E. sigma, and E. simplex is apparently lost, neotypes are designated. doi:10.1002/mmng.201300007

Highlights

The revision of the Ordovician ostracodes described by Krause in the last quarter of the 19th century is finished with the description of the remaining species
Henningsmoen (1953b, p. 50) did not know Kummerow’s (1939) paper (Henningsmoen 1954b, p. 86 footnote) when he considered Primitia distans as type species for Platybolbina, which replaced Thorslund’s younger homonym Platychilina
This opinion is not in accordance with Meidla, who considered the dorsal margin of the holotype being partly embedded in rock and suggested to retain the name limbata for Krauses specimen only

Summary

Introduction

The revision of the Ordovician ostracodes described by Krause in the last quarter of the 19th century is finished with the description of the remaining species. 87) considered Primitia plana Krause, 1889 as a possible synonym of Pr. distans, the type-species of Platybolbina. Primitia excavata Krause, 1892 is an older synonym of Laccochilina (Laccochilina) paucigranosa Jaanusson, 1957.

Results

Conclusion