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Calyptactis
Taxonomy
Calyptactis was named by Spencer (1930) [Sepkoski's age data: C Tour C Vise-l Sepkoski's reference number: 2]. It is not extant. Its type is Calyptactis spinosus. It is the type genus of Calyptactininae.
It was assigned to Calyptactininae by Spencer (1930), Owen (1965); to Taeniactinidae by Spencer and Wright (1966); to Asteroidea by Jell (1997); to Hemizonida by Sepkoski (2002); and to Ophiuroidea by Blake and Elliott (2003).
It was assigned to Calyptactininae by Spencer (1930), Owen (1965); to Taeniactinidae by Spencer and Wright (1966); to Asteroidea by Jell (1997); to Hemizonida by Sepkoski (2002); and to Ophiuroidea by Blake and Elliott (2003).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Calyptactis Spencer |
| 1965 | Calyptactis Owen p. 561 |
| 1966 | Calyptactis Spencer and Wright p. U65 |
| 1997 | Calyptactis Jell p. 315 |
| 2002 | Calyptactis Sepkoski |
| 2003 | Calyptactis Blake and Elliott p. 488 |
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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.
G. †Calyptactis Spencer 1930
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†Calyptactis perarmatus Whidborne 1896
†Calyptactis spinosus Spencer 1930
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992 | |||||
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chadian - Arundian | USA (Indiana) | C. demissus (699) |