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Davidonia
Taxonomy
Davidonia was named by Parkhaev (2017). It is not extant. Its type is Mellopegma rostratum.
It was assigned to Helcionellidae by Claybourn et al. (2019), Ebbestad et al. (2024).
It was assigned to Helcionellidae by Claybourn et al. (2019), Ebbestad et al. (2024).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2017 | Davidonia Parkhaev p. 574 |
| 2019 | Davidonia Claybourn et al. |
| 2024 | Davidonia Ebbestad et al. p. 1868 |
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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. †Davidonia Parkhaev 2017
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†Davidonia puppis Høyberget et al. 2015
†Davidonia rostrata Zhou and Xiao 1984
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Invalid names: Davidonia anhuiensis Zhou and Xiao 1984 [synonym], Davidonia costata Zhou and Xiao 1984 [synonym], Davidonia obliqua Landing and Bartowski 1996 [synonym], Mackinnonia davidi Bengtson et al. 1990 [synonym]
†Davidonia taconica Landing and Bartowski 1996
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Hendy 2009 | |||||
Age range: base of the Nemakit-Daldynian to the top of the Dyeran or 538.80000 to 509.70000 Ma
Collections (90 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Nemakit-Daldynian | China (Shaanxi) | Bemella costa (86566) | |
| Early/Lower Cambrian | Australia (South Australia) | D. sp. (215351 215353 215375 215377 215443 215444 215445 215446 215448 215449 215450 275203) | |
| Atdabanian | Australia (South Australia) | D. rostrata (140339) D. sp. (140335 140343) Mackinnonia davidi (97749) Mackinnonia rostrata (96454 96919 96920 96966 97722 140341) | |
| Nangaoian | China (Henan) | Mellopegma rostratum (96525) Mellopegma rostratum, Bemella costa (49532) | |
| Stage 3 | Australia (South Australia) | D. sp. (215352 275199 275201 275202 275206 275207 275211 275215 275216 275229 275230 275239 275276 275277 275278 275332 275339 275342 275355 275362) | |
| Atdabanian - Botomian | China (Anhui) | Mellopegma rostratum, Bemella anhuiensis, Bemella costa (107632) | |
| Botomian | Australia (South Australia) | Mackinnonia davidi (97751 97770 97773) Mackinnonia rostrata (50793 96914 96915 96916 96917 96932 96958 96959 96965 97700 97723 97726 97730 156332) | |
| Botomian | Antarctica | D. corrugata, D. rostrata (199524) D. rostrata (199520 199522 199523) | |
| Dyeran | Greenland (Lauge Koch Land) | D. rostrata, D. taconica (220278) | |
| Dyeran | USA (New York) | Mackinnonia obliqua (78763) Stenotheca taconica (78762 78764) Stenotheca taconica, Mackinnonia obliqua (78765 78766 78767 171821) | |
| Dyeran | Greenland (Peary Land) | D. rostrata, D. taconica (210618) | |
| Dyeran | Canada (Newfoundland and Labrador) | Mackinnonia taconica (50783) | |
| Dyeran | Canada (Quebec) | Mackinnonia obliqua (78755) Stenotheca taconica (78754) | |
| Dyeran | Greenland | Mackinnonia rostrata (67781) Mackinnonia taconica (49456 49459 49461 49462 49464) Mackinnonia taconica, Mackinnonia rostrata (49458 49471) | |
| Stage 4 | Sweden | D. puppis (236573) D. rostrata, D. puppis (236571) | |
| Toyonian | Norway (Mjøsa) | Mackinnonia puppis (174259) |