Rafinesquina

''Rafinesquina's members were epifaunal, meaning they lived on top of the seafloor, not buried within it, and were suspension feeders. Rafinesquina'' normally have a concavo-convex profile, with radiating striae of alternating size which are crossed with finer concentric striae. ==Distribution==

Rafinesquina specimens had a cosmopolitan distribution, and their fossils can be found in the Americas, Europe, and Asia. ==Species==

Species in the genus Rafinesquina include: • R. alternata (Conrad, 1838) • R. declivis (James, 1874) • R. delicata Williams, 1974 • R. deltoidea (Conrad, 1838) • R. insidiosa Williams, 1962 • R. jeffersonensis Bradley, 1930 • R. latisculptilus (Savage, 1913) • R. lignani Vilas, 1985 • R. mesicosta Shumard, 1860 • R. mucronata Foerste, 1914 • R. nasuta (Emmons, 1842) • R. oanduensis Oraspold, 1956 • R. orvikui Oraspold, 1956 • R. percensis Cooper and Kindle, 1936 • R. planulata Cooper, 1956 • R. ponderosa Hayes and Ulrich, 1903 • R. pseudoloricata (Barrande, 1848) • R. relicula Benedetto, 1995 • R. stropheodontoides (Savage, 1913) • R. trentonensis (Hall, 1847) • R. ultrix Marek and Havlíček, 1967 • R. urbicola Marek and Havlíček, 1967 ==References==