Claggett Shale
Encyclopedia
The Claggett Shale is a geological formation in Montana whose strata date back to the Late Cretaceous
. Dinosaur remains are among the fossils that have been recovered from the formation.
Late Cretaceous
The Late Cretaceous is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale. Rock strata from this epoch form the Upper Cretaceous series...
. Dinosaur remains are among the fossils that have been recovered from the formation.
Vertebrate paleofauna
- HesperornisHesperornisHesperornis is a genus of flightless aquatic birds that spanned the first half of the Campanian age of the Late Cretaceous period . One of the lesser-known discoveries of the paleontologist O. C. Marsh in the late 19th century Bone Wars, it was an important early find in the history of avian...
altus? - "Tibiotarsus and vertebra." (possibly from the Judith River FormationJudith River FormationThe Judith River Formation is a fossil-bearing geologic formation in Montana, and is part of the Judith River Group. It dates to the upper Cretaceous, between 80 and 75 million years ago, corresponding to the "Judithian" land vertebrate age...
) - Hesperornis montana
- cf. Maiasaura