Figure 3
From: Diatoms constrain forensic burial timelines: case study with DB Cooper money
(A) Arrow points to build up of diatoms that penetrated the stack from the edge. The diatom buildup area is in the furrow between the printed ink visible as the smooth areas to the left and right. Diatoms were not found further inside the stack. Scale bar 100 µm. (B) Fragment found in the Tena Bar sand potentially from Asterionella or Fragilaria. Scale bar 10 µm. (C) small diatoms extracted from the Tena Bar sand sample. Scale bar 1 µm.
