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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Calstevenus
Taxonomy
Calstevenus was named by Yancey (1973) [Sepkoski's age data: P Sakm Sepkoski's reference number: 283]. Its type is Calstevenus arcturus.
It was assigned to Scaphopoda by Sepkoski (2002); and to Gadilidae by Reynolds and Steiner (2008).
It was assigned to Scaphopoda by Sepkoski (2002); and to Gadilidae by Reynolds and Steiner (2008).
Species
C. arcturus (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1973 | Calstevenus Yancey |
| 2002 | Calstevenus Sepkoski |
| 2008 | Calstevenus Reynolds and Steiner p. 148 figs. Table 7.2 |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Aberhan et al. 2004, Hendy et al. 2009 | |||||
Age range: Artinskian or 290.10000 to 283.30000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | USA (Nevada) | C. arcturus (89331 89332 89335 89338 89339 89340) |