|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
It was reranked as Urasterella (Stenaster) by Hall (1868).
It was assigned to Urasterella by Hall (1868); to Stenurida by Sepkoski (2002); to Stenasteridae by Schuchert (1914), Schuchert (1915), Spencer (1927), Spencer (1951), Owen (1965), Spencer and Wright (1966) and Dean Shackleton (2005); and to Ophiuroidea by Blake (2013).
|Year||Name and author|
|1858||Stenaster Billings p. 77|
|1868||Urasterella (Stenaster) Hall|
|1880||Tetraster Nicholson and Etheridge, Jr.|
|1915||Stenaster Schuchert pp. 163-165|
|1915||Tetraster Schuchert pp. 167-169 figs. pl. 33 fig. 4|
|1927||Stenaster Spencer pp. 344-356|
|1951||Stenaster Spencer p. 111|
|1965||Stenaster Owen p. 545|
|1966||Stenaster Spencer and Wright p. U82|
|2002||Stenaster Sepkoski, Jr.|
|2005||Stenaster Dean Shackleton p. 80|
|2013||Stenaster Blake p. 369|
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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.
|J. Dean Shackleton 2005||Ambulacrals in direct opposition; ambulacrals rectangular in shape; straight perradial suture; longitudinally oriented lateral groove running down interradial surface of arm; distinct large rounded tubercles on aboral surface of adambulacrals; loss of disc granulation; aboral plates of identical size and morphology.|