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Archegonasteridae (disused)
Taxonomy
Archegonasteridae was named by Spencer (1951). It is not extant. It was considered monophyletic by Dean Shackleton (2005).
It was assigned to Somasteroidea by Spencer (1951); to Goniactinida by Owen (1965), Spencer and Wright (1966) and Blake (1989); to Somasteroida by Dean Shackleton (2005); and to Somasteroidea by Blake and Guensburg (2015).
It was assigned to Somasteroidea by Spencer (1951); to Goniactinida by Owen (1965), Spencer and Wright (1966) and Blake (1989); to Somasteroida by Dean Shackleton (2005); and to Somasteroidea by Blake and Guensburg (2015).
Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Archegonasteridae Spencer p. 101 |
| 1965 | Archegonasteridae Owen p. 543 |
| 1966 | Archegonasteridae Spencer and Wright p. U41 |
| 1989 | Archegonasteridae Blake p. 212 |
| 2005 | Archegonasteridae Dean Shackleton p. 64 |
| 2015 | Archegonasteridae Blake and Guensburg p. 477 |
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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.
Fm. †Archegonasteridae Spencer 1951
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. K. Spencer 1951 | Somasteroidea with bodies bounded by a stout margin frame, approximately pentagonal in outline, rows of virgalia confined to wedge-shaped area within the outer angles of the pentagon, proximal tube feet were buccal tentacles. Adambulacralia present. |