Uptonia
genus of molluscs (fossil)

Uptonia is an extinct ammonite from the Lower Jurassic that's included in the eoderoceratoidean family Polymorphitidae.
The shell of Uptonia is evolute with rounded simple ribs that form strong chevrons as they cross the venter on the outer rim, and which are free of tubercles. Some grew to be fairly large. The suture is ammonitic, complex, with large lateral lobes
Distribution
Fossils of Uptonia have been found in Argentina, Canada (British Columbia), France, Germany, Greenland, Hungary, the Russian Federation, Spain, Turkey, and the United Kingdom.
References
Further reading
Arkell, et al. 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L. Geol Soc of America and Univ Kansas Press. R.C. Moore Ed.
The public source identifies “Uptonia” as genus of molluscs (fossil). This brief keeps that definition visible, then builds a research path around Uptonia, genus and molluscs.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Uptonia”, the useful work is to connect “genus of molluscs (fossil)” to the records capable of establishing context and consequence.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Jan 18, 2026. The linked authority identifier is Q7899409. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1957.
Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Uptonia” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.