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Bicuerda columnare
Taxonomy
Orthonema columnare was named by Erwin (1988). Its type specimen is USNM 400670, a shell, and it is not a trace fossil. Its type locality is USNM722l, Dugout Mountain, Glass Mountains, which is in a Kungurian reef, buildup or bioherm limestone in the Skinner Ranch Formation of Texas.
It was recombined as Bicuerda columnare by Kues and Batten (2001), Wagner (2023).
It was recombined as Bicuerda columnare by Kues and Batten (2001), Wagner (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1988 | Orthonema columnare Erwin |
| 2001 | Bicuerda columnare Kues and Batten p. 58 |
| 2023 | Bicuerda columnare Wagner p. 5934 |
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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.
†Bicuerda columnare Erwin 1988
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 7.70 |
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| Source: superf = superfamily, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: base of the Artinskian to the top of the Kungurian or 290.10000 to 274.40000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | USA (Texas) | Orthonema columnare (101772 101773) | |
| Artinskian | USA (New Mexico) | Orthonema columnare (101770 101771 101795) | |
| Kungurian | USA (Texas) | Orthonema columnare (type locality: 75923) |