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Nathorstella
Taxonomy
Nathorstella was named by Kayser (1901) [Sepkoski's age data: D Emsi].
It was reranked as Myalina (Nathorstella) by Quenstedt (1926).
It was assigned to Myalina by Quenstedt (1926); to Ambonychiidae by Cox et al. (1969); and to Pterioida by Sepkoski (2002).
It was reranked as Myalina (Nathorstella) by Quenstedt (1926).
It was assigned to Myalina by Quenstedt (1926); to Ambonychiidae by Cox et al. (1969); and to Pterioida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1901 | Nathorstella Kayser p. 10 |
| 1926 | Myalina (Nathorstella) Quenstedt p. 75 |
| 1969 | Nathorstella Cox et al. p. N287 |
| 2002 | Nathorstella Sepkoski |
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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.
G. †Nathorstella Kayser 1901
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Subg. †Nathorstella (Follmannia)
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†Follmannia flabellicosta Fuchs 1915
†Nathorstella (Follmannia) pseudalectryonia Frech 1891
Subg. †Nathorstella (Nathorstella) Kayser 1901
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†Nathorstella (Nathorstella) semiplicata Kayser 1901
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| valve height | 2 | 43.0 | 42.2 | 43.9 | 43.0 | 1.20 |
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| Source: f = family, c = class | |||||
| References: Hendy 2009, Aberhan et al. 2004 | |||||
Age range: base of the Early/Lower Emsian to the top of the Wuchiapingian or 410.62000 to 254.14000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Emsian | Germany (Hesse) | Gosseletia flabellicosta (275450) | |
| Late/Upper Emsian | Germany (Rhineland-Palatinate) | Follmannia pseudalectryonia (275451 275452) | |
| Eifelian | Norway (Svalbard) | Myalina semiplicata (275453 275454) | |
| Wordian | USA (Wyoming) | Myalina wyomingensis (115888) | |
| Wuchiapingian | USA (Wyoming) | Myalina wyomingensis (105366) | |
| Lopingian | USA (Wyoming) | Myalina wyomingensis (105285) |