| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Keithia
Taxonomy
Keithia was named by Raymond (1924) [Sepkoski's age data: Cm Trep]. It is not extant.
It was assigned to Asaphida by Sepkoski (2002); and to Ptychaspididae by Jell and Adrain (2002).
It was assigned to Asaphida by Sepkoski (2002); and to Ptychaspididae by Jell and Adrain (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1924 | Keithia Raymond |
| 2002 | Keithia Jell and Adrain p. 392 |
| 2002 | Keithia Sepkoski |
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.
G. †Keithia Raymond 1924
show all | hide all
†Keithia similis Rasetti 1944
†Keithia subclavatus Billings 1860
Diagnosis
No diagnoses are available
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
| Source: g = genus, f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009, Whittington et al. 1997, Hendy et al. 2009 | |||||
Age range: base of the Dolgellian to the top of the Sunwaptan or 492.50000 to 487.50000 Ma
Collections (17 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Merioneth | USA (Vermont) | K. schucherti (6871 8976) | |
| Sunwaptan | Canada (Newfoundland and Labrador) | K. schucherti (81269 81270 81271 81272) K. subclavata (81285 81286) | |
| Dolgellian | Canada (Quebec) | K. subclavata (8933 8934) | |
| Trempealeauan | Canada (Quebec) | K. similis (224137) K. subclavata (224138 224139 224140 224141 224144 224150) |