|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Asteroidea - Arkonasteridae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|R. V. Kesling 1982||Multi-armed starfish of the suborder Eugnathina having only RR (carinal plates) on aboral sides of the arms. No superomarginals or inferomarginals present. MAPP very large, spoon-shaped, with shallow but distinct grooves aborally for nerve- and water-rings. Mouth frame of adambulacral type, strongly constructed. No axillary plates associated with MAPP. Madreporite aboral, very large and well developed. Pedicellariae atop arms and disk.|