Data from: Diverse early Pleistocene ground squirrels from northeastern Nebraska including a new genus and species
Data files
Jul 02, 2026 version files 23.67 KB
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Goodwin_EP_ground_squirrels_appendix_1_upper.csv
7.96 KB
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Goodwin_EP_ground_squirrels_appendix_2_lower.csv
14.27 KB
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README.md
1.44 KB
Abstract
All early Pleistocene (late Blancan Land Mammal Age) ground squirrels (Rodentia, Sciuridae, Xerinae, Marmotini) included in the study, "Diverse early Pleistocene ground squirrels from northeastern Nebraska including a new genus and species." Data are presented separately for upper (appendix 1) and lower (appendix 2) dental elements. Within each appendix, data are ordered alphabetically by genus and species (at least 10 species in total), locality (Big Springs, Dead Creek, Hornet's Nest), dental element, and University of Nebraska State Museum (UNSM) catalog number. Dental measurements (measurement parameters given in the paper) and tooth wear stage are provided if available. Comments are provided for some specimens: in particular, morphological comments are provided for specimens that may warrant further study (i.e., those with queried identification or that I could not identify to species). These data are intended to support further metric analysis and taxonomic work by researchers interested in fossil ground squirrels.
Dataset DOI: 10.5061/dryad.34tmpg519
Description of the data and file structure
Appendices list all fossil ground squirrels examined for this study. They include comments for some fossils and measurements, when available. Blank cells are used when there is no data for this combination.
Files and variables
File: Goodwin_EP_ground_squirrels_appendix_1_upper.csv
Description: All fossil maxillaries and upper cheek teeth included in this study.
Variables (all in mm)
- LP3: Length P3 (upper premolar 3)
- WP3: Width P3
- LP4: Length P4
- WP4: Width P4
- LM1: Length M1 (upper molar 1)
- WM1: Width M1
- LM2: Length M2
- WM2: Width M2
- LM1-2: Length M1 or M2
- WM1-2: Width M1 or M2
- LM3: Length M3
- WM3: Width M3
File: Goodwin_EP_ground_squirrels_appendix_2_lower.csv
Description: All fossil dentaries and lower cheek teeth included in this study
Variables (all in mm)
- Lp4: Length p4 (lower premolar 4)
- TrW p4: Width across the trigonid p4
- TalWp4: Width across the talonid p4
- Lm1: Length m1 (lower molar 1)
- Wm1: Width across the trigonid m1
- Lm2: Length m2
- Wm2: Width across the trigonid m2
- Lm3: Length m3
- Wm3: Width across the trigonid m3
- Lm1-2: Length m1 or m2
- Wm1-2: Width across the trigonid m1 or m2