Schizaster

Schizaster Temporal range:
Fossil of Schizaster species from Italy
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Order:	Spatangoida
Family:	Schizasteridae
Genus:	Schizaster
Synonyms
Aplospatangus Lambert 1907 Brachybrissus Pomel 1883

Schizaster is a genus of heart urchins belonging to the family Schizasteridae. The type species of the genus is Schizaster studeri.

Species

Extant and extinct species within this genus include:

• Schizaster alcaldei Sánchez Roig, 1949 †
• Schizaster alsiensis Maccagno, 1947 †
• Schizaster altissimus Arnold & H. L. Clark, 1927 †
• Schizaster bathypetalus Arnold & H. L. Clark, 1927 †
• Schizaster beckeri Cooke, 1942 †
• Schizaster brachypetalus Arnold & H. L. Clark, 1927 †
• Schizaster caobaense Sánchez Roig, 1949 †
• Schizaster cojimarensis Sánchez Roig, 1949 †
• Schizaster compactus (Koehler, 1914)
• Schizaster costaricensis Durham, 1961 †
• Schizaster delorenzoi Checchia-Rispoli, 1950 †
• Schizaster doederleini (Chesher, 1972)
• Schizaster dumblei Israelsky, 1924 †
• Schizaster duroensis Kier, 1957 †
• Schizaster dyscritus Arnold & H. L. Clark, 1927 †
• Schizaster edwardsi Cotteau, 1889 -
• Schizaster eopneustes Lambert, 1933 †
• Schizaster excavatus Martin, in Jeannet & Martin, 1937 †
• Schizaster fernandezi Sánchez Roig, 1952 †
• Schizaster floridiensis (Kier & Grant, 1965)
• Schizaster gerthi Pijpers, 1933 †
• Schizaster gibberulus L. Agassiz in L. Agassiz & Desor, 1847
• Schizaster gigas Sánchez Roig, 1953 †
• Schizaster granti Duncan & Sladen, 1883 †
• Schizaster guirensis Sánchez Roig, 1949 †
• Schizaster habanensis Sánchez Roig, 1949 †
• Schizaster hexagonalis Arnold & H. L. Clark, 1927 †
• Schizaster humei Lambert, 1932 †
• Schizaster hunti Kier, 1957 †
• Schizaster jeanneti Martin, in Jeannet & Martin, 1937 †
• Schizaster karkarensis Kier, 1957 †
• Schizaster kinasaensis Morishita, 1953 †
• Schizaster lacunosus (Linnaeus, 1758)
• Schizaster leprosorum Lambert, 1933 †
• Schizaster llagunoi Lambert & Sánchez Roig, in Sánchez Roig, 1949 †
• Schizaster marci Castex, 1930 †
• Schizaster miyazakiensis Morishita, 1956 †
• Schizaster morlini Grant & Hertlein, 1956 †
• Schizaster moronensis Sánchez Roig, 1951 †
• Schizaster munozi Sánchez Roig, 1949 †
• Schizaster narindensis Lambert, 1933 †
• Schizaster ocalanus Cooke, 1942 †
• Schizaster orbignyanus A. Agassiz, 1880
• Schizaster ovatus (Lindley, 2004)
• Schizaster pappi Thirring, 1936 †
• Schizaster pentagonalis Sánchez Roig, 1953 †
• Schizaster persica Clegg, 1933 †
• Schizaster portisi Serra, 1932 †
• Schizaster pratti Israelsky, 1933 †
• Schizaster riveroi Sánchez Roig, 1952 †
• Schizaster rojasi Sánchez Roig, 1952 †
• Schizaster rotundatus (Döderlein, 1906)
• Schizaster salutis Sánchez Roig, 1949 †
• Schizaster sanctamariae Sánchez Roig, 1949 †
• Schizaster santanae Sánchez Roig, 1949 †
• Schizaster schlosseri Traub, 1938 †
• Schizaster taiwanicus Hayasaka, 1948 †
• Schizaster vedadoensis Sánchez Roig, 1949 †

The fossil record of the genus dates back to the Paleocene (age range: 66.043 to 0.012 million years ago). These fossils have been found all over the world.

References

• Cyril Walker & David Ward (1993) - Fossielen: Sesam Natuur Handboeken, Bosch & Keuning, Baarn. ISBN 90-246-4924-2