Asterina (itsas izarra)
Asterina itsas izar txikien generoa da, Asterinidae familiakoa. Barnean hogeita hamar espezie baino gehiago ditu.

Bost mutur dituen ekinodermoa da. Txikia da eta oso beso laburrak ditu, zabalak oinean. Horrek ematen dio bost muturreko izar itxura. A. gibbosa, Mediterraneo itsasoan eta Atlantikoan bizi dena, eta A. pancerii, Mediterraneokoa, dira Europan ikusten diren mota ezagunenak.

Espezieak 
World Register of Marine Species (WoRMS) datu-basearen arabera, generoak honako espezieak ditu:
 Asterina agustincasoi Caso, 1978 (Meridiastra modesta (Verrill, 1870) )
 Asterina atyphoida H.L. Clark, 1916
 Asterina burtoni burtoni Gray, 1840
 Asterina burtoni cepheus (Müller & Troschel, 1842)
 Asterina cepheus (Müller & Troschel, 1842)
 Asterina chilensis Lutken, 1859
 Asterina coronata coronata von Martens, 1866
 Asterina coronata cristata Fisher, 1916
 Asterina coronata euerces Fisher, 1917
 Asterina coronata fascicularis Fisher, 1918
 Asterina crassispina H.L. Clark, 1928
 Asterina fimbriata Perrier, 1875
 Asterina folium (Lütken, 1859)
 Asterina frigida Koehler, 1917
 Asterina gibbosa (Pennant, 1777)
 Asterina gracilispina H.L. Clark, 1923
 Asterina hamiltoni Koehler, 1920
 Asterina hoensonae O'Loughlin, 2009
 Asterina inopinata Livingstone, 1933
 Asterina limboonkengi G.A. Smith, 1927
 Asterina lorioli Koehler, 1910
 Asterina lutea H.L. Clark, 1938
 Asterina miniata (Brandt, 1835)
 Asterina minor Hayashi, 1974
 Asterina modesta Verrill, 1870
 Asterina nuda H.L. Clark, 1921
 Asterina ocellifera (Gray, 1847)
 Asterina orthodon Fisher, 1922
 Asterina pancerii (Gasco, 1870)
 Asterina pectinifera (Muller & Troschel, 1842)
 Asterina perplexa H.L. Clark, 1938
 Asterina phylactica Emson & Crump, 1979
 Asterina sarasini (deLoriol, 1897)
 Asterina scobinata Livingstone, 1933
 Asterina spinigera Koehler, 1911
 Asterina stellifera (Möbius, 1859)
 Asterina trochiscus (Retzius, 1805)

Erreferentziak 

 Clark, A.M. (1993). An index of names of recent Asteroidea, part 2: Valvatida, in: Jangoux, M.; Lawrence, J.M. (Ed.) (1993). Echinoderm Studies, 4: pp. 187–366
 Clark, A.M. and M.E. Downey. (1992). Starfishes of the Atlantic. Chapman & Hall Identification Guides, 3. Chapman & Hall: London, UK. 
 Hansson, H.G. (2001). Echinodermata, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 336–351

Kanpo estekak 

Asteroidea
Asterina itsas izar txikien generoa da , Asterinidae familiakoa . Barnean hogeita hamar espezie baino gehiago ditu . Bost mutur dituen ekinodermoa da . Txikia da eta oso beso laburrak ditu , zabalak oinean . Horrek ematen dio bost muturreko izar itxura . A. gibbosa , Mediterraneo itsasoan eta Atlantikoan bizi dena , eta A. pancerii , Mediterraneokoa , dira Europan ikusten diren mota ezagunenak . Espezieak World Register of Marine Species ( WoRMS ) datu-basearen arabera , generoak honako espezieak ditu : Asterina agustincasoi Caso, ( Meridiastra modesta ( Verrill , ) Asterina atyphoida H.L. Clark , Asterina burtoni burtoni Gray , Asterina burtoni cepheus ( Müller & Troschel , Asterina cepheus ( Müller & Troschel , Asterina chilensis Lutken , Asterina coronata coronata von Martens , Asterina coronata cristata Fisher , Asterina coronata euerces Fisher , Asterina coronata fascicularis Fisher , Asterina crassispina H.L. Clark , Asterina fimbriata Perrier , Asterina folium ( Lütken , Asterina frigida Koehler , Asterina gibbosa ( Pennant , Asterina gracilispina H.L. Clark , Asterina hamiltoni Koehler , Asterina hoensonae O ' Loughlin , Asterina inopinata Livingstone , Asterina limboonkengi G.A. Smith , Asterina lorioli Koehler , Asterina lutea H.L. Clark , Asterina miniata ( Brandt , Asterina minor Hayashi , Asterina modesta Verrill , Asterina nuda H.L. Clark , Asterina ocellifera ( Gray , Asterina orthodon Fisher , Asterina pancerii ( Gasco , Asterina pectinifera ( Muller & Troschel , Asterina perplexa H.L. Clark , Asterina phylactica Emson & Crump , Asterina sarasini ( deLoriol , Asterina scobinata Livingstone , Asterina spinigera Koehler , Asterina stellifera ( Möbius , Asterina trochiscus ( Retzius , Erreferentziak Clark , A.M. An index of names of recent Asteroidea , part Valvatida , in : Jangoux , M. ; Lawrence , J.M. ( Ed. ) Echinoderm Studies , pp . 187–366 Clark , A.M. and M.E. Downey . Starfishes of the Atlantic . Chapman & Hall Identification Guides , Chapman & Hall : London , UK. Hansson , H.G. Echinodermata , in : Costello , M.J. et al . ( Ed. ) European register of marine species : a check-list of the marine species in Europe and a bibliography of guides to their identification . Collection Patrimoines Naturels , pp . 336–351 Kanpo estekak Asteroidea