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Parabolablastus
Taxonomy
Parabolablastus was named by Sprinkle and Sumrall (2008). Its type is Blastoidocrinus elongatus.
It was assigned to Blastocystidae by Sprinkle and Sumrall (2008).
It was assigned to Blastocystidae by Sprinkle and Sumrall (2008).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Parabolablastus Sprinkle and Sumrall pp. 9 - 12 |
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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. †Parabolablastus Sprinkle and Sumrall 2008
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†Parabolablastus elongatus Sprinkle 1973
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Sprinkle and C. D. Sumrall 2008 | Theca large, apparently with highly domed vault and short, conical pelvis; deltoids parabolic with long, thick limbs diverging at 35°–55° and bordering long, relatively thin ambulacra, no ambulacral or oral crests seen, 60 or more short, zigzagged, cataspire slits along inside of elongate deltoids, numerous small interbrachials in arched row below slits, long extensions of paired bibrachials filling center of concave vault interrays along with forming large, complete, outer circlet in pelvis, possible radials smaller, forming inner circlet and possible stem cavity in center of pelvis; highly rugose or labyrinthine ornament on large deltoids and bibrachials. |
Measurements
No measurements are available
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| Source: o = order, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992 | |||||
Age range: Rangerian or 471.30000 to 470.30000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Rangerian | USA (Nevada) | Blastoidocrinus elongatus (183606) P. elongatus (119435) | |
| Whiterockian | USA (Nevada) | Blastoidocrinus elongatus (80073) |