5 volumes of macrofossils illustrated in the Quaterly Journal Of The Geological Society are given identifications and locality details together with the bibliographic reference. A few are foreign, but most are from the UK. The first date given is QJGS volume 12 for 1856. Last date mentioned is 1912. Numbers used: GS1-7886; GSA1-5000; GSB1-5000; GSC1-5000;GSD1-6415. The data set is closed, but occasional modification to the registers are infrequently made to update or correct certain specimens.

Registers of macrofossils in 127 volumes, covers the whole of the UK. Within each volume, data is arranged sequentially usually by collectors no. The data set began with the first Palaeontologist in the Geological Survey of Great Britain.

Registers of macrofossils arranged by 1" (one inch ro the mile) or 1:50 000 scale English geological sheets. Each register is numbered 1-359 and each sheet has one or more volumes. Within each volume, data is arranged by collectors symbol. This is the system used in the Leeds office (the London office had a different system- see MACROLONDON). It is this system that is currently in use.

Micro CT scans and associated documents (3d files, animations, segmentation files, data files etc) of palaeontological material.

Registers dating from the 1950s listing some of the macrofossil collections held in the Geological Survey of Ireland between 1868 and 1875. They are numbered sequentially, but as they are a selection only, there are some gaps in the numbers. Numbers included are: I1-4893; K1253-4937;L319-3247;N961-3066;O4521-5000; P1-4393; R1-1270;S1978-2099; T1-500 and U1-2113.

Three volumes of SAM samples (SAM1-SAM4789) exist. They represent the work of FW Anderson in the 1950s and 1960s. All samples were re-registered into other datasets. They are predominantly from the Cretaceous and Tertiary. Sample number, fossil type, locality and geological details are given, including borehole name and depth where appropriate.

Register of microfossil analyses carried out in the Leeds and London Office during the 1970s and 1980s held in book form and in box files. They are arranged as follows: SAA 1-4409 Calcareous Microfossils onshore; SAB1-3229 Calcareous Microfossils (London) Jurassic onshore; SAC1-3247 Calcareous microfossils (Leeds) Jurassic and Cretaceous onshore; SAD1-1593 Palaeozoic microfossils onshore; SAG 1-2062 Chalk foraminifera onshore; SAY1-1888 Calcareous microfossils offshore; SAZ1-2261 Calcareous microfossils from Continental Shelf (South).

The register lists Lower Palaeozoic microfaunas (including "small shelly" faunas), but occasionally mentions small trilobites and various fragments. SAQ1-259 are used, although several numbers have no details assigned to them. Sample number, sheet number, NGR, fossil identification, borehole names & depths are given.

Data include geological logs and charts; letters, minutes & memos; notes; externally written reports; Internal reports; Research Reports; annotated publications, records and reports; and other miscellaneous documentation. Although some of the data go back to the first half of the 20th century (and rarely earlier), the bulk of the data refer to work carried out since about 1960. The data are filed under four subheadings: i. 1:50K sheet files (data relating to BGS mapping projects) for England & Wales, Scotland and Northern Ireland. ii. Offshore sheet files (data relating to BGS mapping projects) for the UK continental shelf and North Atlantic. iii. Offshore Quadrants (data relating to the hydrocarbons industry) (confidential). iv. Foreign biostratigraphy (in part confidential). v. General Palaeontology, Biostratigraphy & Taxonomy.

Microfossil samples submitted to the BGS biostratigraphy laboratory are currently registered using the prefix 'MPA'. Samples include rock, residues from sample preparations, and slides of mounted specimens. Rock, residues and slides from the same sample all bear the same unique identifying sample number. The numbers MPA 1 to 54400 have been used, but this grows steadily. There are currently 21 volumes of registered samples. The value added dataset comprises data for each sample held in the sample register, including collectors' symbols and numbers, 1:10k (or 6") OS quarter sheet, NGR, 1:50k (or 1") geological sheet, borehole name and depth (if relevant), locality, geological formation and report numbers. The value added dataset also includes identifications of specimens on each slide, which are listed on logging sheets and are held separately.