This dataset, provided as supplementary material, documents the dissolution susceptibility of Globigerinoides ruber albus tests in relation to bioerosion drill holes. Sixty foraminiferal tests were extracted from a sample at 131 cm depth (20.8 ± 1.2 ka BP) in core SAT-048A (29º11'S, 47º15'W, 1,542 mbsl), which spans the Marine Isotope Stages 1–3 (5–43 ka BP). Specimens were subjected to a dissolution experiment using a buffered acetic acid solution (pH 6.6). The dataset categorizes specimens into groups based on bioerosion levels, ranging from no drill holes (control) to four drill holes, to assess the impact of bioerosion on test preservation. Dissolution progression was monitored at hourly intervals until specimen destruction, and preservation was quantified using Absolute and Relative Preservation Scores (APS and RPS), as well as the two-dimensional projected area of the specimens. The experiment provides insights into the preservation dynamics of bioeroded foraminiferal tests under controlled dissolution conditions. The dataset includes images, size measurements, and preservation scores for each specimen, along with statistical analyses conducted using R. This data can aid in understanding dissolution impacts on the fossil record and bioerosion's role in foraminiferal preservation.

Supplementary Table 1. Area (µm²) measurements of five specimens (2, 6, 8, 10, and 13) from the Control group across five iterations (T1–T5) of the digital shadow removal treatment applied to images taken at different dissolution time points (0-13 hours) in acid solution. Untreated (UT) areas are presented in the first row for each specimen. The standard deviation (SD%) is provided below both untreated and treated areas. The minimum and maximum standard deviations are displayed in the rightmost column.Supplementary Table 2. Preservation scores assigned to 15 specimens from each bioerosion level group (C, I, III, IV). The Absolute Preservation Scores (APS) are presented at the top, ranging from eight (best preservation) to zero (missing test). Below, the Relative Preservation Scores (RPS) reflect the preservation state relative to the initial state (Exp. Time = 0) prior to exposure. Cumulative Relative Preservation Scores (CRPS) are indicated at the end of each specimen's RPS values. Additionally, the Mean and Standard Deviation of the RPS are provided at the bottom of each exposure time column.Supplementary Table 3. Area (µm²) of 15 specimens from each bioerosion level group (C, I, III, IV) over the exposure time in acid solution. Below the tests areas, the Relative Preservation Areas (RPA) reflect the preservated area state relative to the initial state (Exp. Time = 0) prior to exposure. Cumulative Relative Preservation Areas (CRPA) are indicated at the end of each specimen's RPA values. Additionally, the Mean and Standard Deviation of the RPA are provided at the bottom of each exposure time column.Supplementary Table 4. Areas (µm²) of bioerosion drill holes from three groups (I, III, and IV), measured prior to exposure to the acid solution. NA for Not Available values.