Schizaster Rotundatus

''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:Biolib
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* '' 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.

Schizasteridae
Echinoidea genera
Extant Danian first appearances

{{echinoidea-stub