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Hemiaster (Trachyaster)
Taxonomy
Trachyaster was named by Pomel (1869).
It was reranked as Hemiaster (Trachyaster) by Fischer (1966), Kier (1984).
It was assigned to Spatangoida by Pomel (1883); and to Hemiaster by Fischer (1966), Kier (1984).
It was reranked as Hemiaster (Trachyaster) by Fischer (1966), Kier (1984).
It was assigned to Spatangoida by Pomel (1883); and to Hemiaster by Fischer (1966), Kier (1984).
Subtaxa
Species lacking formal opinion data
Synonyms
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Synonymy list
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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.
Subg. †Hemiaster (Trachyaster) Pomel 1869
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†Hemiaster (Trachyaster) decipiens Duncan and Sladen 1883
†Hemiaster (Trachyaster) herrarae Lambert and Sanchez Roig 1926
Invalid names: Hemiaster (Trachyaster) minutus Sanchez Roig 1949 [nomen nudum]
Diagnosis
No diagnoses are available