“…This has led investigators to use Sr in combination with C and/or O to predict the likely origin of recovered UBC remains (e.g., Bartelink et al, 2018, 2020; Bartelink & Chesson, 2019; Kramer et al, 2020). Mapping products (isoscapes) needed for these geolocation efforts are being rapidly created—that is, for Mexico (Ammer, Kootker, et al, 2020; Juarez et al, 2018; see Figure 2), and the circum‐Caribbean region (Bataille et al, 2012; Laffoon et al, 2017; see Figure 3) as well as other parts of the world (Adams et al, 2019; Bataille et al, 2018, 2020; Daux et al, 2021; Gautam et al, 2020; Shin et al, 2020; Wang & Tang, 2020; Zieliński et al, 2021). These products, in conjunction with more regular use of isotope testing, should help foster more widespread application of the technique in the coming years.…”