Catalogue of the available names and non available names of the species and subspecies for the Class Trilobita

Notes to the Database:
The list is an extract from a database with about 30.000 index cards. One card (corresponding with one taxon) includes both the listed informations and also some remarks to the stratigraphy, earlier or new designations to other genera, holotypes, synonyms, nomina nuda etc. Is a specimen available in the Lemke collection further remarks are included, e.g. the locality, collection number, which parts are visible and quantities etc. The database contains also ca. half a million literature citations. A supplementary database contains additional 10.000 taxa in open nomenclature. Altogether 40.000 described trilobite taxa from about 300 years of trilobite research were documented. Between 6000-7000 species were regarded by authors as synonymous, around 800 are nomina nuda. About 20.000 geological publications and some dozens of dissertations and diplom theses were evaluated.

Problems of the Database:
Because of missed corrections during the actualisation of the dataset it was frequently evident, that after changes of the generic status the indicating brackets around the authors might be wrong. The data should therefor not be used unchecked. Further it might be possible, that after the evaluation of chinese or russian literature in some cases wrong interpretions occured (e.g. it was sometimes not clear, if the author or a reference was mentioned) with the result, that a species can be found under 2 different genera. The database has no consistent concept. A assignment of species and genus documents normally unchanged the opinion of the authors during the time of the publication.