Extended Data Fig. 9. Elemental heat maps of acipenseriform elements from the Tanis locality, obtained with micro-X-ray fluorescence, showing homogenous distributions of Ca and P.
a, Ca heat map of paddlefish dentary X-2723. b, Ca heat map of sturgeon pectoral fin spine VUA.GG.2017.MDX-3. c, Ca heat map of paddlefish dentaries VUA.GG.2017.X-2733A, VUA.GG.2017.X-2733B, and the surrounding sediment matrix. d, Ca heat map of sturgeon pectoral fin spine VUA.GG.2017.X-2743M. e, Ca heat map of sturgeon pectoral fin spine VUA.GG.2017.X-2744M. f, P heat map of paddlefish dentary VUA.GG.2017.X-2724. g, P heat map of sturgeon pectoral fin spine VUA.GG.2017.MDX-3. h, P heat map of paddlefish dentaries VUA.GG.2017.X-2733A, VUA.GG.2017.X-2733B, and the surrounding sediment matrix. i, P heat map of sturgeon pectoral fin spine VUA.GG.2017.X-2743M. j, P heat map of sturgeon pectoral fin spine VUA.GG.2017.X-2744M. Red and blue indicate higher,respectively lower abundance of Ca (a, b, c, d, and e) and P (f, g, h, i, and j).