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Acrothyra
Taxonomy
Acrothyra was named by Mathew (1901). Its type is Acrotreta proavia.
It was assigned to Acrotretida by Bengtson (1992), Sepkoski (2002); to Acrotretidae by Williams et al. (2000), Landing et al. (2008); and to Acrotretoidea by Skovsted et al. (2017).
It was assigned to Acrotretida by Bengtson (1992), Sepkoski (2002); to Acrotretidae by Williams et al. (2000), Landing et al. (2008); and to Acrotretoidea by Skovsted et al. (2017).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1901 | Acrothyra Mathew |
| 1992 | Acrothyra Bengtson p. 1030 |
| 2000 | Acrothyra Williams et al. p. 104 |
| 2002 | Acrothyra Sepkoski |
| 2008 | Acrothyra Landing et al. p. 900 |
| 2017 | Acrothyra Skovsted et al. |
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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. †Acrothyra Mathew 1901
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†Acrothyra bonnia Skovsted et al. 2017
†Acrothyra minor Walcott 1905
†Acrothyra proavia Matthew 1899
†Acrothyra sera Mathew 1902
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Hendy 2009, Nesnidal et al. 2013 | |||||
Collections (40 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Atdabanian | United Kingdom (England) | A. comleyensis (79933) A. comleyensis, A. sera (79940) | |
| Branchian | United Kingdom (England) | A. comleyensis, A. sera (79928) | |
| Branchian | Canada (New Brunswick) | A. sera (84379 84395 84396 84397 84398 84399) | |
| Dyeran | Canada (Newfoundland) | A. bonnia (196324 196327 196329 196338 196352 196353) | |
| Delamaran | Canada (British Columbia) | A. gregaria (84412 84418 84420 84421 84422 84423 84424 84425 84426 84427 84428 84429 84430 84431 84432 84433 84434 121959) | |
| Delamaran | USA (Nevada) | A. minor (232726) | |
| Middle Cambrian | Canada (Brithish Columbia) | A. sp. (188664) | |
| St Davids | Canada (British Columbia) | A. gregaria (122094) | |
| Topazan | USA (Idaho) | A. minor (50208) | |
| Marjumian | USA (Utah) | A. urania, A. minor (230682) | |
| Merioneth | USA (Idaho) | A. sp. (198) | |
| Merioneth | USA (Nevada) | A. sp. (208) |