| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Protonema
Taxonomy
Protonema was named by Cooke (1928) [Sepkoski's age data: T Ol]. Its type is Protonema bartschi.
It was assigned to Neotaenioglossa by Sepkoski (2002); and to Melanellidae by Cooke (1928) and Petuch (2003).
It was assigned to Neotaenioglossa by Sepkoski (2002); and to Melanellidae by Cooke (1928) and Petuch (2003).
Species
P. bartschi (type species)
Entered
by J. Sepkoski on 2003-01-23; modified by P. Wagner on 2016-03-14
Synonymy list
Is something missing? Join the Paleobiology Database and enter the data
|
|
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
| Reference | Diagnosis | |
|---|---|---|
| C. W. Cooke 1928 | Melanellids having the nuclear whorls spirally threaded. |
Measurements
No measurements are available
|
|
||||
|
|||||
|
|
||||
|
|
||||
| Source: f = family, c = class | |||||
| References: Kiessling 2004, Hendy et al. 2009 | |||||
Age range: Early/Lower Oligocene or 33.90000 to 27.30000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Oligocene | Mexico | P. bartschi (61206) |