Petraster

Petraster
	; Petraster sp.
Ilmiy tasniflash
Olam:	Animalia
Tip:	Echinodermata
Sinf:	Asteroidea
Urugʻ:	†Petraster; Billings, 1858
Xilma-xillik
	†Coelaster americanus (d’Orbigny, 1850); †Palasterina kinahani (Baily, 1878); †Palasterina ramseyensis (Hicks, 1873); †Palasterina rigidus (Billings, 1857); †Petraster angustior Withers & Keble, 1934; †Petraster crozonensis Blake et al., 2016; †Petraster richi Withers & Keble, 1934; †Petraster smythi McCoy, 1874;
Sinonimlari
	Uranaster Gregory, 1899;

Petraster – yoʻq boʻlib ketgan dengiz yulduzlari urugʻi. U yuqori Ordovikdan kech Silur davrigacha yashagan^[1]. Bu jins keng tarqalgan boʻlib, uning qoldiqlari Shimoliy Amerika va Avstraliyadan topilgan.

Manbalar

Petraster
Petraster sp.
Ilmiy tasniflash
Olam:	Animalia
Tip:	Echinodermata
Sinf:	Asteroidea
Urugʻ:	†Petraster Billings, 1858
Xilma-xillik
†Coelaster americanus (d’Orbigny, 1850) †Palasterina kinahani (Baily, 1878) †Palasterina ramseyensis (Hicks, 1873) †Palasterina rigidus (Billings, 1857) †Petraster angustior Withers & Keble, 1934 †Petraster crozonensis Blake et al., 2016 †Petraster richi Withers & Keble, 1934 †Petraster smythi McCoy, 1874
Sinonimlari
Uranaster Gregory, 1899