Cretaceous of Greenland, Alabama, Arkansas, California, Colorado, Kansas, Maryland, Mississippi, Missouri, New Jersey, South Dakota, Tennessee, Texas, Wyoming,
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. 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==