Goniasteridae

'' '' '' Goniasteridae are usually middle-sized sea stars with a characteristic double range of marginal plates bordering the disk and arms. Most of them have five arms, often short and triangular, around a broad central disc; many species are pentagonal or subpentagonal, covered densely with granular, seed-like protuberances, hence the name of the family "seed-star" (gonium+aster). The aboral face is often covered with tiny spines looking like paxillae. Pedicellariae are often valvate, and the gonads are located at the interradius. Main identification keys for this group include the presence of paxillae, granules, teeth, spines, or the shape and dimensions of marginal plate. ==Location and habitat==

They occur predominantly on deep-water continental shelf habitats (but a part of them inhabit shallow waters) in all the world's oceans, being the most diverse in the Indo-Pacific region. ==List of genera==

About 260 extant species within 70 genera are currently known, which make this family the most diverse of all the sea stars, even if half of the genera are monospecific. Species belonging to the Ferdininae subfamily have been imported from Ophidiasteridae thanks to a large revision of these two families in 2017 According to World Register of Marine Species, this family includes the following genera: Image:Akelbaster caledoniae.JPG|Akelbaster novaecaledoniae Image:Anthenoides peircei - NOAA Photo Library.jpg|Anthenoides piercei Image:Apollonaster kelleyi.jpg|Apollonaster kelleyi Image:Astroceramus eldredgei.jpg|Astroceramus eldredgei Image:Calliaster baccatus P3164673.JPG|Calliaster baccatus Image:Ceramaster granularis-25mm.jpg|Ceramaster granularis Image:Chitonaster johannae.jpg|Chitonaster johannae Image:Circeaster sandrae.JPG|Circeaster sandrae Image:Cladaster analogus.JPG|Cladaster analogus Image:Eknomiaster beccae.JPG|Eknomiaster beccae Image:Eratosaster jenae.JPG|Eratosaster jennae Image:Evoplosoma.jpg|Evoplosoma sp. Image:Eosaster nadiae.jpg|Eosaster nadiae Image:Ferdina flavescens.jpg|Ferdina flavescens Image:Kanakaster solidus.jpg|Kanakaster solidus Image:Neoferdina cumingi.jpg|Neoferdina cumingi Image:Paraferdina plakos.jpg|Paraferdina plakos Image:Fromia monilis (Seastar).jpg|Fromia monilis Image:Gilbertaster caribaea.jpg|Gilbertaster caribaea Image:Glyphodiscus magnificus.jpg|Glyphodiscus magnificus Image:Goniaster tessellatus São Tomé.jpg|Goniaster tessellatus Image:Olympic Coast National Marine Sanctuary 2010 Hippasteria spinosa.jpg|Hippasteria spinosa Image:Iconaster longimanus.jpg|Iconaster longimanus Image:Mariaster giganteus 01.jpg|`Mariaster giganteus Image:Mediaster aequalis 25March2010 14.jpg|Mediaster aequalis Image:Milteliphaster woodmasoni.jpg|Milteliphaster woodmasoni Image:Nectria macrobrachia Large plated seastar P1021082.JPG|Nectria macrobrachia Image:Nymphaster arenatus.png|Nymphaster arenatus Image:Peltaster placenta.jpg|Peltaster placenta Image:Pawsonaster parvus.jpg|Pawsonaster parvus Image:Pentagonaster duebeni 1.jpg|Pentagonaster duebeni Image:Pillsburiaster calvus.JPG|Pillsburiaster calvus Image:Plinthaster dentatus.jpg|Plinthaster dentatus Image:Pseudoceramaster regularis.jpg|Pseudoceramaster regularis Image:Rosaster.jpg|Rosaster sp. Image:Ryukuaster onnae.JPG|Ryukuaster onnae Image:Sphaeriodiscus mirabilis.JPG|Sphaeriodiscus mirabilis Image:Galloping sea star (Stellaster equestris).jpg|Stellaster childreni Image:Stellasteropsis fouadi (MNHN-IE-2014-49) 01.jpg|Stellasteropsis fouadi Image:Sthenaster emmae.JPG|Sthenaster emmae Image:Tosia australis P1222858.JPG|Tosia australis == Extinct genera ==

''. , Upper Cretaceous), southern Israel. Lists of genera containing extinct species according to fossilworks. ==References==