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Pararcheoentactinia
Taxonomy
Pararcheoentactinia was named by Won and Iams (2002).
It was assigned to Archeoentactinidae by Won and Iams (2002), Won et al. (2007); and to Archeoentactiniidae by Noble et al. (2017).
It was assigned to Archeoentactinidae by Won and Iams (2002), Won et al. (2007); and to Archeoentactiniidae by Noble et al. (2017).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Pararcheoentactinia Won and Iams p. 9 |
| 2007 | Pararcheoentactinia Won et al. |
| 2017 | Pararcheoentactinia Noble et al. p. 432 |
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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. †Pararcheoentactinia Won and Iams 2002
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†Pararcheoentactinia cowheadensis Won et al. 2005
†Pararcheoentactinia impedita Won and Iams 2002
†Pararcheoentactinia parastilla Won and Iams 2015
†Pararcheoentactinia reedae Won and Iams 2002
†Pararcheoentactinia stilla Won et al. 2007
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M.-Z. Won and W. J. Iams 2002 | A skeleton with a spherical shell and one pointcentered spicule. The spherical shell varying from a disorderly and three-dimensionally interwoven primitive meshwork of straight to slightly curved bars to a typical spongy tissue. The point-center of the spicule positioned from eccentrically within the central shell cavity to immediately adjacent to the innermost
shell wall; rays with or without spinules (or trace of spinules); spinules with or without connection to the shell meshwork, but where all the spinules connected to the shell wall, the rays forming a part of the shell wall; rodlike rays protruding out of the shell wall as outer spines. |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 1999 | |||||
Age range: base of the Trempealeauan to the top of the Tremadocian or 490.20000 to 477.10000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Franconian | Canada (Newfoundland and Labrador) | P. reedae (90965 90966 90967 90968) | |
| Trempealeauan | Canada (Newfoundland and Labrador) | P. impedia, P. reedae (90970 90971) P. reedae (90969) | |
| Tremadocian | Canada (Newfoundland and Labrador) | P. reedae (234142 234143) P. reedae, P. stilla, P. cowheadensis (234138 234141) |