An evaluated list of Cenozic-Recent radiolarian species names (Polycystinea), based on those used in the DSDP, ODP and IODP deep-sea drilling programs

Abstract

A first reasonably comprehensive evaluated list of radiolarian names in current use is presented, covering Cenozoic fossil to Recent species of the primary fossilising subgroup Polycystinea. It is based on those species names that have appeared in the literature of the Deep Sea Drilling Project and its successor programs, the Ocean Drilling Program and Integrated Ocean Drilling Program, plus additional information from the published literature, and several unpublished taxonomic database projects. 1192 names are recognised as valid, and several hundred additional names including synonyms and mispellings are given as well. A brief list of valid names is provided in the main paper, while the full list, with synonyms, author, year of publication, family assignment, geologic age interval and notes is provided as a SOM spreadsheet table.

New northwest Pacific radiolarian data as a tool to estimate past sea surface and intermediate water temperatures

“…However, at the same time Lazarus et al . [] standardized 1192 radiolarian species compiling literatures of the Deep‐Sea Drilling Project to Integrated Ocean Drilling Program. Therefore, the raw data for all encountered species and their taxonomical references, showing Matsuzaki et al .…”

“…[] and Lazarus et al . [] nomenclatures, are provided in the Data Set S1. Second, the species selected to be associated with the modern hydrography must be correctly identified and have a relevant and well‐known vertical distribution.…”

“…As radiolarian taxonomy is relatively unsettled compared to other microfossil groups, the identification of radiolarian species in this study was mainly conducted following the taxonomic descriptions and systematics of Matsuzaki et al [2015b]. However, at the same time Lazarus et al [2015] standardized 1192 radiolarian species compiling literatures of the Deep-Sea Drilling Project to Integrated Ocean Drilling Program. Therefore, the raw data for all encountered species and their taxonomical references, showing Matsuzaki et al…”

Accuracy of a neural net classification of closely-related species of microfossils from a sparse dataset of unedited images

“…Generic assignments in Cenozoic radiolarians are currently rather arbitrary and many closely related forms are still assigned distinct generic names that probably should be synonymized. This situation is due to the highly artifical generic classification created by early workers such as E. Haeckel, which has not yet been formally revised due to limited manpower by current workers (Lazarus et al, 2015). The species chosen are Antarctissa denticulata (Ehrenberg 1844), A. strelkovi Petrushevskaya 1967, A. cylindrica Petrushevskaya 1967 Lazarus 2012, A. robusta Petrushevskaya 1975, A. deflandrei (Petrushevskaya 1975), Helotholus?…”

“…vema Hays 1965 and Lithomelissa setosa Jörgensen (Figure 1). Full citations to taxon authors for all species used in this study but A. ballista can be found in Lazarus et al (2015). Antarctissid species are topologically segmented-conical, and are constructed out of a large, spherical to thumb-like apical 'segment' (the cephalis) and a larger, more or less cylindrical lower part to the shell (the thorax), plus several bars and struts inside the shell.…”