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Taxonomy
Proetus welleri was named by Stauffer (1909).
It was recombined as Dechenella welleri by Richter (1912); it was recombined as Cyrtodechenella welleri by Stumm (1964); it was recombined as Dechenella (Dechenella) welleri by Stumm (1953) and Lieberman (1994).
It was recombined as Dechenella welleri by Richter (1912); it was recombined as Cyrtodechenella welleri by Stumm (1964); it was recombined as Dechenella (Dechenella) welleri by Stumm (1953) and Lieberman (1994).
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Proetus welleri Stauffer pp. 195 - 196 |
| 1912 | Dechenella welleri Richter p. 266 |
| 1953 | Dechenella (Dechenella) welleri Stumm p. 21 figs. pl. 3, figs. 3-5 |
| 1964 | Cyrtodechenella welleri Stumm pp. 5-6 figs. pl. 1, figs. 14, 15, pl. 2, fig. 10 |
| 1994 | Dechenella (Dechenella) welleri Lieberman pp. 121 - 122 figs. 35.5-35.8 |
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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.
†Dechenella (Dechenella) welleri Stauffer 1909
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. S. Lieberman 1994 | Anterior portion of intraoccipital lobe straight behind transverse line tangent to anteromedian portion of SO; lateral margins of glabella converging at same angle between SI and S2 and S2 and S3; posterior portion of glabella transverse; facial suture meets on dorsal portion ofanteromedian edge of eye for portion circumscribing anteromedian part of eye, then running sagittally and forming an obtuse angle; pygidial border reaches point of constant thickness opposite pleural segment four, poorly developed and flattened dorsally, long flat region equal to length of first two axial rings; pleural segments flat. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Fortey and Owens 1999, Aberhan et al. 2004, Hendy 2009 | |||||
Age range: Southwoodian or 391.90000 to 388.10000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Eifelian | USA (Ohio) | Dechenella welleri (207850) | |
| Southwoodian | USA (Indiana) | Cyrtodechenella welleri (188933) |