{"references": ["Granjon, L., & Cheylan, G. (1990b). Diff\u00e9renciation biom\u00e9trique des rats noirs (Rattus rattus) des \u00eeles ouest-m\u00e9diterran\u00e9ennes. Mammalia, 54(2), 213\u2013231.", "Ibrahim, A. ben, Salem, I. ben, Chetoui, M., & Nouira, S. (2017). Morpho-metric analysis of the insular and mainland Rattus in Tunisia. Biologia, 72(8), 927\u2013934. https://doi.org/10.1515/biolog-2017-0093", "Lomolino, M. v. (1985). Body Size of Mammals on Islands: The Island Rule Reexamined. The American Naturalist, 125(2), 310\u2013316. https://www.jstor.org/stable/2461638", "Ramalhinho, M. G., Mathias, M. L., Santos-Reis, M., Libois, R., Fons, R., Petrucci-Fonseca, F., Oom, M. M., & Collares-Pereira, M. (1996). First Approach on the Skull Morphology of the Black Rat (Rattus rattus) from the Terceira and S\u00e3o Miguel Islands (Azores Archipelago). Vie Milieu, 46(3/4), 245\u2013251.", "Ventura, J., & L\u00f3pez Fuster, M. (2000). Morphometric analysis of the black rat, Rattus rattus, from Congreso Island (Chafarinas Archipelago, Spain). Orsis, 15, 91\u2013102."]}

Relative size index (RSI) comparative dataset and R code used to compare the RSI sensu Lomolino (1985) of the ship rats from the Ma'agan Mikhael B (MMB) shipwreck with other Mediterranean island populations. Worksheet 1: RSI_Dataframe - data frame used in R to produce RSI bar chart. Worksheet 2: RSI Data - Mainland and island samples' mean condylobasal lengths (CBL) and further calculations used to derive the RSI values per island population. Worksheet 3: CBL values for each Provençal and Corso-Sardinian Islet that was combined in the RSI analysis, taken directly from Granjon & Cheylan (1990). Data sources: MMB - Southern Levant (this study) Galite & Zembra Islands - Tunisia (Ibrahim et al., 2017) Congreso Island - Morocco (Ventura & Lopez Fuster, 2000) São Miguel & Terceira Island (Azores) - Portugal (Ramalhinho et al., 1996) Corsica & Provençal Islets - Provence (Granjon & Cheylan, 1990) Sardinia & Corso-Sardinian Islets - Tuscany (Granjon & Cheylan, 1990)