†Hardouinia mortonis emmonsi Stephenson 1927
Alternative combination: Cassidulus emmonsi
Synonyms: Cassidulus berryi Clark and Twitchell 1915, Hardouinia stetsoni Stephenson 1936
Belongs to Hardouinia mortonis according to C. W. Cooke 1953
See also Clark and Twitchell 1915
Sister taxa: none
Type specimens:
- Hardouinia mortonis emmonsi: Its type locality is USGS 12262, New Rocky Point Quarry, which is in a Maastrichtian carbonate limestone in the Peedee Formation of North Carolina
- Cassidulus berryi: Its type locality is Niells Eddy Landing, Cape Fear River, which is in a Maastrichtian marine horizon in the Peedee Formation of North Carolina.
- Hardouinia stetsoni: Its type locality is Georges Bank, which is in a Maastrichtian marine sandstone in North Atlantic.
Distribution:
• Cretaceous of North Atlantic (1 collection), United States (4: North Carolina)
Total: 5 collections each including a single occurrence