SUPPLEMENTARY FIGURE 1. In situ Maoricolpus murrayanus (Tate 1885) from the mid-Miocene aged Murbko Marl (Murray Basin, South Australia) fluorescence from exposure to UV light, displaying the commonness and intensity of fluorescence found across the species. Photographed in shade from outcrop. Scale bar = 10 mm.
SUPPLEMENTARY FIGURE 2. SEM image and EDX maps for the modern turritellid, Maoricolpus roseus (SAMA D74596). Element initials indicated in lower-right corner. Scale bar = 1 mm.
