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Akasakiella yabei
Taxonomy
Murchisonia yabei was named by Hayasaka (1943). It is a 3D body fossil. Its type locality is Kinshozan, Kuro zone, Akasaka, Gifu Prefecture, which is in a Capitanian carbonate limestone in the Akasaka Formation of Japan.
It was recombined as Raha yabei by Hayami and Kase (1977); it was recombined as Akasakiella yabei by Nützel and Nakazawa (2012).
It was recombined as Raha yabei by Hayami and Kase (1977); it was recombined as Akasakiella yabei by Nützel and Nakazawa (2012).
Synonymy list
| Year | Name and author |
|---|---|
| 1943 | Murchisonia yabei Hayasaka p. 32 figs. Pl 2, figs 2,3; pl 4, figs 1,2; pl 5, fig 2 |
| 1977 | Raha yabei Hayami and Kase p. 41 |
| 2012 | Akasakiella yabei Nützel and Nakazawa p. 133 fig. 16P |
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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.
†Akasakiella yabei Hayasaka 1943
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 340.6 | 290.0 | 400.0 | 345.0 | 77.8 | |
| shell diameter | 2 | 109.4 | 92.0 | 130.0 | 111.0 | 26.9 |
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Artinskian to the top of the Capitanian or 290.10000 to 259.51000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | Japan (Iwate) | Murchisonia yabei (182561) | |
| Capitanian | Japan | Akasakiella yabei (109667) Murchisonia yabei (type locality: 109637) |