Schroer_and_Wood_2015_Evolution_character_displacement_African_apes_v1

PREFERRED CITATION: Schroer K and Wood B. 2015. The role of character displacement in the molarization of hominin mandibular premolars. Evolution. DOI: 10.1111/evo.12672. Title: Schroer_and_Wood_2015_Evolution_character_displacement_African_apes_v1 Version number: 1 Date (ISO) original data publication: 5/5/15 Dates (ISO) data collection: 01/01/12-01/01/14 Date (ISO) online publication: 5/5/15 Companion manuscript title: "The role of character displacement in the molarization of hominin mandibular premolars" Companion manuscript journal: Evolution Primary collector of data: Kes Schroer Co-authors: Bernard Wood Research assistants: Kristen Ramirez, Christine Foltz Short description: Measurements of the lower fourth premolar (P4) from African apes for character displacement analysis. Rows: 60 (header = TRUE) Columns: 17 Empty cell label: NA Variables: I, T, L, Intrx, Taxon, logmd, logbl, logarea, Randomly.selected?, ACC, Museum, Sex, Group, Location, P4MD, P4BL, P4AREA ==================== I, T, L, and Intrx: variables of the input matrix. “I” is Intercept and is always 1. “T” is “Taxon” and is encoded “1” for one taxon and “-1” for the other. “L” is location and is “1” for the sympatrix taxa and “-1” for the allopatric taxa. “Intrx” is the interaction of T and L and simply multiples these two values. Taxon: genus and species, with “symp” or “allo” added after the species name for gorillas. “Symp” gorillas are from Cameron or Gabon (in the Location column) and overlap with chimpanzee specimens labeled “Pan.troglodytes.troglodyates”. All other gorilla samples are marked “allo” and all other chimpanzee samples are labeled “Pan.troglodytes.other.” logmd, logbl, and logarea: the natural logs of the measurements P4MD, P4BL, and P4AREA. Randomly.selected: whether or not a specimen was randomly selected by the custom R script for character displacement analysis (see manuscript for more details). “Yes” indicates that the specimen was selected and “NA” indicates that the specimen was not. ACC: specimen number assigned by the host museum Museum: AMNH = American Museum of Natural History, NMNH = National Museum of Natural History, Smithsonian Institution, BMNH = Museum of Natural History, London Sex: F = female, M = male Group: “African_apes” for all specimens. This category has other values in other datasheets for the character displacement analysis, for easy combinations during comparative analyses. Location: Country of specimen’s origin. P4MD: mesiodistal diameter of the lower fourth premolar, in millimeters P4BL: buccolingual diameter of the lower fourth premolar, in millimeters P4AREA: area of the occlusal surface of the lower fourth premolar, calculated through a resampled outline in the digitization program tpsDIG (see manuscript for more details).