Figure 1
From: Novel detection of provenance in the illegal wildlife trade using elemental data
Logged counts of 24 different elements detected at 200-μm intervals on captive-bred (blue) and wild-caught (orange) echidna quills using high resolution x-ray fluorescence, ordered left to right (C1-12 then W1-W11). Elements are ordered from top-left to bottom-right by ranked predictive importance determined using machine learning.
