FIGURE 12 in Neoichnology of tarantulas (Araneae: Theraphosidae): Criteria for recognizing spider burrows in the fossil record

FIGURE 12. All animal burrow cluster diagram. Cluster analysis of the burrows produced by Hysterocrates gigas (HG, blue, n = 10), Pelinobius muticus (PM, green, n = 8), and Aphonopelma chalcodes (AC, red, n = 9), the scorpion Pandinus imperator (PI, light blue, n = 9), trapdoor spider Gorgyrella inermis (GI, yellow, n = 7) (yellow), the salamander Ambystoma tigrinum (AT, black, n = 9) (red), and the skink Mabuya multifasciata (MM, purple, n = 8) (green). The burrows sort into 11 highly similar (BC> 0.80) clusters (A–K), each populated primarily by the burrows of a single trace maker: A = 100% P. imperator (n = 9); B = 100% A. chalcodes (n = 4); C = 100% M. multifasciata (n = 6); D = 100% A. tigrinum (n = 4); E = 100% M. multifasciata (n = 2); F = 100% A. tigrinum (n = 5); G = 80% H. gigas (n = 4); H = 88% G. inermis (n = 7); I = 50% H. gigas/A. chalcodes (n = 2 each); J = 100% H. gigas (n = 2); K = 89% P. muticus (n = 8).