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Biarmeaspira arizonensis
Taxonomy
Worthenia arizonensis was named by Winters (1963). Its type specimen is AMNH 28005/3:1, a shell, and it is a 3D body fossil. Its type locality is Cibecue Road, Locality 4, which is in a Kungurian shallow subtidal limestone in the Supai Formation of Arizona.
It was recombined as Biarmeaspira arizonensis by Mazaev (2017).
It was recombined as Biarmeaspira arizonensis by Mazaev (2017).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1963 | Worthenia arizonensis Winters p. 35 figs. Pl 2, figs 5a-7 |
| 1969 | Worthenia arizonica Bachman and Meyers |
| 1989 | Worthenia arizonensis Batten p. 51 figs. Pl 10, figs 6-8 |
| 2017 | Biarmeaspira arizonensis Mazaev p. 231 |
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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.
†Biarmeaspira arizonensis Winters 1963
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 4 | 5.82 | 5.70 | 6.00 | 5.80 | 0.150 | |
| shell diameter | 4 | 4.76 | 4.50 | 5.20 | 4.60 | 0.379 |
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| Source: o = order | |||||
| Reference: Bambach et al. 2007 | |||||
Age range: base of the Artinskian to the top of the Wordian or 290.10000 to 264.28000 Ma
Collections (18 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | USA (New Mexico) | Worthenia arizonensis (101800) | |
| Kungurian | USA (New Mexico) | Worthenia arizonica (10139) | |
| Kungurian | USA (Texas) | Worthenia arizonensis (43513 43515 43609 81592 81617 81711 81949 101792) | |
| Kungurian | USA (Arizona) | Worthenia arizonensis (52898 type locality: 95353 120746 120747) | |
| Roadian | USA (Texas) | Worthenia arizonensis (43512 81693) | |
| Wordian | USA (Texas) | Worthenia arizonensis (81628 81709) |