''Discoscaphites '' is an extinct genus of ammonite. This genus may have been one of the few to have briefly survived the K-Pg mass extinction.

Distributions

Cretaceous of Greenland, Alabama, Arkansas, California, Colorado, Kansas, Maryland, Mississippi, Missouri, New Jersey, South Dakota, Tennessee, Texas, Wyoming, and North Carolina. ''Discoscaphites'' is present in the famous Pinna Layer of the

Tinton Formation The Tinton Formation is a geologic formation in New Jersey. It preserves fossils dating back to the Cretaceous-Paleocene periods, such as ammonites. See also * List of fossiliferous stratigraphic units in New Jersey * Paleontology in New Jerse ...

of New Jersey (above the

iridium anomaly The term iridium anomaly commonly refers to an unusual abundance of the chemical element iridium in a layer of rock strata at the Cretaceous–Paleogene (K–Pg) boundary. The unusually high concentration of a rare metal like iridium is often tak ...

), with even possible records in the layer above, along with ''Eubaculites''. some researchers prefer a conservative interpretation when dating the Pinna Layer, the other remains still suggest ''Discoscaphites'' was a K-Pg survivor, albeit restricted to 65 Ma.

References

External links

* Scaphitidae Ammonitida genera Cretaceous ammonites Late Cretaceous ammonites of North America Campanian genus first appearances Maastrichtian genus extinctions Cretaceous United States Maastrichtian life Hell Creek fauna Fossil taxa described in 1870 {{Ammonitida-stub