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Aulactis
Taxonomy
Aulactis was named by Spencer (1930) [Sepkoski's age data: O Cara Sepkoski's reference number: 2]. It is not extant. Its type is Aulactis orthopeda. It was considered monophyletic by Dean Shackleton (2005).
It was assigned to Protasteridae by Spencer (1940), Owen (1965) and Spencer and Wright (1966); to Oegophiurida by Sepkoski (2002); and to Stenasteridae by Dean Shackleton (2005) and Blake et al. (2016).
It was assigned to Protasteridae by Spencer (1940), Owen (1965) and Spencer and Wright (1966); to Oegophiurida by Sepkoski (2002); and to Stenasteridae by Dean Shackleton (2005) and Blake et al. (2016).
Species
A. orthopeda (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Aulactis Spencer figs. pl. 28 fig. 9 |
| 1940 | Aulactis Spencer p. 504 |
| 1965 | Aulactis Owen p. 551 |
| 1966 | Aulactis Spencer and Wright p. U87 |
| 2002 | Aulactis Sepkoski |
| 2005 | Aulactis Dean Shackleton p. 80 |
| 2016 | Aulactis Blake et al. p. 176 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Dean Shackleton 2005 | Circumoral ossicle complex covers fourth ambulacral ossicle; thrid ambulacral forms part of circumoral ossicle complex; adambulacral attach to mail jaw plates aborally. |