Porosononion granosum (d'Orbigny, 1826)       

Class: Rotaliata  Subclass: Rotaliana  Order: Elphidiida  Family: Elphidiidae
Taxon Profile

found         

Geological Time:     



classification and image courtesy of
Smithsonian Institution National Museum of Natural History

View of a specimen of Porosononion granosum (d'Orbigny, 1826)
E. lidoense is a synonym
The classification is published in:
d'Orbigny, A. (1826). Tableau méthodique de la classe des céphalopodes. Annales des Sciences Naturelles (1) 7: 96–169. as USNM
accessed