However, since this initial scepticism, biologists have come to a consensus that declines in amphibian populations are a real and severe threat to biodiversity.
Pocket gophers also appear to be their primary food source, but other reported food items include other rodents, cottontails, amphibians, and ground-nesting birds and eggs.
The briefness of this period, and the swiftness with which radiation took place, would help account for the relative scarcity of primitive amphibian fossils.
There are three classes of aircraft: landplanes, seaplanes, and amphibians; then within these classes, there are records for aircraft in a number of weight categories.
