''Quinnites'' is a genus of goniatitid ammonites included in the
gastrioceratoidean family
Reticuloceratidae
Reticuloceratidae is one of five families of the Gastrioceratoidea superfamily. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids.
...
known from the
Carboniferous
The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago ( Mya), to the beginning of the Permian Period, million years ago. The name ''Carbonifero ...
of the state of Arkansas, USA.
Description
''Quinnites ''can be recognized by its thickly discoidal shell with a wide umbilicus and double pronged ventral lobe with a median saddle about half as high as the entire lobe. Umbilical ribs are common. May have spiral ornamentation, constrictions, or ventral groove.
''Quinnites'' in Gonait on Line
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Taxonomy
''Quinnites'', named by Manger and Saunders 1980, contains two species, ''Quinnites henbesti'' and
''Quinnites textum'', both removed from Gastrioceras ( Branneroceras).
References
Goniatitida genera
Reticuloceratidae
Carboniferous ammonites of North America
{{Goniatitida-stub