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Aperispirifer
Taxonomy
Aperispirifer was named by Waterhouse (1968) [Sepkoski's age data: P Sakm-u P Dora Sepkoski's reference number: 427,712].
It was assigned to Spiriferida by Sepkoski (2002); to Grantonini by Waterhouse (2004); and to Trigonotretinae by Williams et al. (2006).
It was assigned to Spiriferida by Sepkoski (2002); to Grantonini by Waterhouse (2004); and to Trigonotretinae by Williams et al. (2006).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1968 | Aperispirifer Waterhouse p. 35 |
| 2002 | Aperispirifer Sepkoski |
| 2004 | Aperispirifer Waterhouse |
| 2006 | Aperispirifer Williams et al. p. 1802 |
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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. †Aperispirifer Waterhouse 1968
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†Aperispirifer archboldi Waterhouse 2001
†Aperispirifer lethamensis Waterhouse 1968
†Aperispirifer nelsonensis Waterhouse 1964
†Aperispirifer ovalis Waterhouse 1987
†Aperispirifer wairakiensis Waterhouse 1964
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 8 | 29.4 | 18.5 | 54.0 | 28.5 | 11.5 |
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: base of the Artinskian to the top of the Changhsingian or 290.10000 to 251.90200 Ma
Collections (77 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Sakmarian - Artinskian | China (Yunnan) | A. sp. (234358) | |
| Artinskian | New Zealand (Southland) | A. n. sp. A (41791) A. sp. A (41783) Neospirifer hardmani (41775) | |
| Kungurian | New Zealand (Southland) | Neospirifer sp. A (52844) Neospirifer wairakiensis (41776) | |
| Roadian | New Zealand (Southland) | A. n. sp. B (41766) Neospirifer wairakiensis (41781) | |
| Wordian | Australia (Queensland) | A. ovalis (66277 101571 113859 120321 120324 120325 120328 120542 120543 120642 120643 120644 120646 120647 120648 120650) | |
| Wordian | New Zealand (Southland) | A. lethamensis (41780 41785 41796) Neospirifer sp. A (41767) | |
| Capitanian | New Zealand (Southland) | A. sp., Neospirifer sp. A (41777) | |
| Wuchiapingian | Australia (Queensland) | A. lethamensis (98098 98100 98101 101570 104772 105009 120329 120330 120331 120332 120335 120336 120338 120339 120340 120341 120342 120346 120379 120535 120536 120538 120656 120657 120660 120661 120666 120674) A. sp. (101569 104768 104769) A. wairakiensis (105011 209008 209011 209015) Trigonotreta sp. D (103145) | |
| Changhsingian | New Zealand | A. nelsonensis (52757 52779 52780 52783 52784) Neospirifer nelsonensis (52751 52753 52755 52759 52767 52777) Trigonotreta nelsonensis (98149) |