Alternative spellings: Hardouinia, Procassidulus (Hardouinia)
Synonyms: Clarkiella Lambert 1916, Cossmannaster Lambert 1921 [objective synonym], Gonioclypeus Emmons 1858
Full reference: E. d'Archiac and J. Haime. 1853. Description des animaux fossiles du groupe nummulitique de l'Inde, précédée d'un résumé géologique et d'une monographie des nummulites. Gide & J. Baudry, Paris 1-373
Parent taxon: Cassiduloida according to A. B. Smith 2001
See also Cooke 1953, Kier 1962, Kier 1966, Lambert and Thiéry 1921, Sanchez Roig 1926 and Sepkoski 2002
Sister taxa: Astropygaulus, Bothryopneutes, Calilampus, Cassidulina, Centropygus, Claviaster, Clypeanthus, Conoclypeus, Echinanthus, Eogaleropygus, Gitolampas, Laticlypus, Lovenilampas, Neolampadina, Ovulechinus, Platypygus, Procassidulus, Pygurostoma, Stegopygus
Subtaxa: Clarkiella hemispherica Hardouinia aequorea Hardouinia bassleri Hardouinia conoideus Hardouinia florealis Hardouinia kellumi Hardouinia mcglameryae Hardouinia micrococcus Hardouinia mortonis Hardouinia stantoni Hardouinia taylori
Distribution:
• Paleocene of United States (1: New Jersey collection)
• Cretaceous of Canada (1: Alberta), Cuba (1), North Atlantic (1), United States (86: Alabama, Colorado, Delaware, Georgia, Mississippi, North Carolina, South Carolina, Texas)
Total: 90 collections including 102 occurrences
Specimen images are retrieved through the ePANDDA API.
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