Discoscaphites

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.

Discoscaphites Temporal range: PreꞒ Ꞓ O S D C P T J K Pg N Campanian to Danian
Discoscaphites iris, Owl Creek Formation (Upper Cretaceous), Ripley, Mississippi.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Suborder:	†Ancyloceratina
Family:	†Scaphitidae
Subfamily:	†Scaphitinae
Genus:	†Discoscaphites Meek, 1870
Species[1]
D. conradi D. gulosus D. rossi

Distributions

Cretaceous of Greenland, Alabama, Arkansas, California, Colorado, Kansas, Maryland, Mississippi, Missouri, New Jersey, South Dakota, Tennessee, Texas, Wyoming,^[1] and North Carolina.^[2] Discoscaphites is present in the famous Pinna Layer of the Tinton Formation of New Jersey (above the iridium anomaly), with even possible records in the layer above, along with Eubaculites.^[3] 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.^[4]