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Surveys of Calling Amphibians in North Dakota
Figure 1 - Plains Spadefoot Toad (
Scaphiopus bombifrons
)
Fig. 1. Study areas where Plains spadefoot toads were detected (solid hexagons) and not detected (open hexagons) in 1995 surveys in North Dakota. The shaded area is the range in North Dakota indicated by Hoberg and Gause (1992).
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-- Figure 2 - Canadian Toad