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Derbyia complicata
Taxonomy
Derbyia complicata was named by Cooper and Grant (1974). Its type specimen is USNM 151198h, a shell (Articulated shell), and it is not a trace fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Derbyia complicata Cooper and Grant pp. 296-297 figs. Pl 81, figs 4-38; pl 88, figs 1-6 |
| 1981 | Derbyia complicata Hoover p. 43 figs. Pl 1, figs 10-16 |
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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.
†Derbyia complicata Cooper and Grant 1974
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 14 | 10.9 | 4.90 | 16.0 | 11.1 | 3.25 |
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| Source: c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Collections (30 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | Venezuela (Merida) | Derbyia complicata (41508 41514) | |
| Kungurian | USA (Texas) | Derbyia complicata (43459 43466 43491 43504 43510 43513 43515 43517 43582 81638 101785 105687 105688 105746 105848 105849 105931 105935 105981) | |
| Roadian | USA (Texas) | Derbyia complicata (43512 43518 43563 101807 102604 102611 102621 105873 106109) |