Figure 32 in Expanded concept of the milliped family Spirobolidae Diplopoda: Spirobolida: Spirobolidea): Proposals of Aztecolini n. tribe and Floridobolinae/ini and Tylobolini n. stats.; (re)descriptions of Floridobolus and F. penneri, both Causey, 1957, and F. orini n. sp.; hypotheses on origins and affinities

Figure 32. Inferred, pre-Cretaceous, spirobolid dispersal pathways plotted against Cretaceous land patterns; submerged, marine Florida terrane and approximate maximal dimensions of the Western Interior Seaway in light blue. Broad lines, primary dispersal routes (prior to Cretaceous Embayment); narrow lines, secondary dispersal routes (during and after retreat of the Seaway and emergence of peninsular Florida). Colors for dispersal lines and question marks (uncertain occurrences) as follows: Pink, Floridobolini/Floridobolus; Green, Hiltonius/Tylobolini; Dark Blue, Tylobolus/Tylobolini; Purple, Aztecolini/Chicobolus; Red, Narceus/Spirobolini; Gold, Spirobolus/ Spirobolini. Ap, Appalachia. CA (blackened ovoid region in eastern lobe of Appalachia), Taxon Cluster Area in late- Cretaceous. L, Laramidia. SA (blackened rounded region in Mexico), Presumptive Source Area in the "northern Mexican Highlands."