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Springerocystidae
Taxonomy
Springerocystidae was named by Bassler (1950). Its type is Springerocystis.
It was assigned to Eocrinoidea by Bassler (1950) and Beaver et al. (1967); and to Paracrinoidea by Sprinkle (1973) and Frest et al. (1979).
It was assigned to Eocrinoidea by Bassler (1950) and Beaver et al. (1967); and to Paracrinoidea by Sprinkle (1973) and Frest et al. (1979).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1950 | Springerocystidae Bassler p. 277 |
| 1967 | Springerocystidae Beaver et al. p. S486 |
| 1973 | Springerocystidae Sprinkle p. 138 |
| 1979 | Springerocystidae Frest et al. p. 386 |
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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. †Springerocystidae Bassler 1950
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G. †Columbocystis Bassler 1950
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†Columbocystis ovata Parsley 1975
†Columbocystis typica Bassler 1950
G. †Foerstecystis Bassler 1950
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Bassler 1950 | Eocrinoidea in which the top of the theca is tubelike (Springerocystis) but may also be platform- shaped (Columbocystis) or consist of five broad, short, recumbent arms (Foerstecyslis). |
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992 | |||||
Age range: Turinian or 457.30000 to 453.80000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Caradoc | USA (Virginia) | Columbocystis typica (37904) | |
| Caradoc | USA (Tennessee) | Columbocystis ovata (197206) Foerstecystis obliqua, Springerocystis longicollis (37903) | |
| Turinian | USA (Tennessee) | Columbocystis ovata (227641) |