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Genus	Species
Asteromorpha	5
Asteronyx	9
Asteroporpa	6
Asteroschema	34
Asterostegus	3
Astracme	1
Astroboa	8
Astrobrachion	2
Astrocaneum	0
Astroceras	13
Astrochalcis	1
Astrocharis	3
Astrochele	3
Astrochlamys	2
Astrocladus	4
Astroclon	2
Astrocnida	0
Astroconus	0
Astrocrius	2
Astrocynodus	0
Astrodactylus	0
Astrodendrum	5
Astrodia	5
Astrodictyum	0
Astroglymma	1
Astrogomphus	1
Astrogordius	0
Astrohamma	1
Astrohelix	0
Astroniwa	1
Astrophyton	1
Astroplegma	0
Astroporpa	0
Astroraphis	0
Astrosierra	2
Astrospartus	1
Astrostephanus	0
Astrothamnus	2
Astrothorax	2
Astrothrombus	3
Astrotoma	2
Astrozona	0
Conocladus	1
Euryale	2
Gorgonocephalus	10
Ophiocreas	13
Ophiocrene	2
Ophiohelix	0
Ophiozeta	0
Schizostella	1
Squamophis	3
Sthenocephalus	2
Trichaster	2