''Domatoceras'' is a
nautiloid genus and member of the
Grypoceratidae
Grypoceratidae is the longest-lived family of the Trigonoceratoidea, or of the near equivalent Centroceratina; members of the Nautilida from the Upper Paleozoic and Triassic.Kummel,B. 1964. Nautiloidea-Nautilida, Treatise on Invertebrate Paleonto ...
from the
Pennsylvanian Pennsylvanian may refer to:
* A person or thing from Pennsylvania
* Pennsylvanian (geology)
The Pennsylvanian ( , also known as Upper Carboniferous or Late Carboniferous) is, in the International Commission on Stratigraphy, ICS geologic timesca ...
and
Permian with a wide spread distribution.
The shell of ''Domatoceras'' is
evolute, coiled with
whorls touching but not overlapping, some growing to be moderately large. Whorl section