| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Fransonia wyomingensis
Taxonomy
Fransonia wyomingensis was named by Newell and Boyd (1995). Its type specimen is AMNH 44036, a valve (Left valve), and it is not a trace fossil. Its type locality is USNM703c, Old Word Ranch, Glass Mountains, which is in a Kungurian slope limestone in the Road Canyon Formation of Texas. It is the type species of Fransonia.
Synonymy list
| Year | Name and author |
|---|---|
| 1995 | Fransonia wyomingensis Newell and Boyd p. 67 fig. 50 |
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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.
†Fransonia wyomingensis Newell and Boyd 1995
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 10 | 10.5 | 9.10 | 12.9 | 10.3 | 1.17 |
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| Source: o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: base of the Kungurian to the top of the Wuchiapingian or 279.30000 to 254.17000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | USA (Texas) | Fransonia wyomingensis (43491 type locality: 43517) | |
| Roadian | USA (Texas) | Fransonia wyomingensis (81693) | |
| Wuchiapingian | USA (Wyoming) | Fransonia wyomingensis (61951 115794) |