Humbug Formation

The Humbug Formation is a geologic formation in Utah. It preserves fossils dating back to the Mississippian (Meramecian) of the Carboniferous period.

Description
The Humbug Formation includes intercalated limestones, orthoquartzitic sandstones, and dolomite. It is more than 2100 ft thick on Stansbury Island but thins to the east and south. There the formation averages about 600 ft thick.

Fossil content
The following fossils have been reported from the formation:
 * Bryozoans


 * Fenestella acarinata
 * F. crockfordae
 * F. hamithensis
 * F. rarinodosa
 * F. serratula
 * F. tooelensis
 * F. trifurcata
 * Hemitrypa reticulata
 * Polypora micronodosa
 * P. stansburyensis
 * Ptylopora eliasi
 * Septopora sp.