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Arthraria
Taxonomy
Arthraria was named by Billings (1872). It is not extant. Its type is Arthraria antiquata.
It was assigned to Ichnofossils by Hantzschel (1975).
It was assigned to Ichnofossils by Hantzschel (1975).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1872 | Arthraria Billings p. 467 |
| 1975 | Arthraria Hantzschel |
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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. †Arthraria Billings 1872
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†Arthraria antiquata Billings 1872
†Arthraria biclavata Miller 1875
†Arthraria biclavata westonensis Foerste 1924
†Arthraria rogersensis Foerste 1924
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. Hantzschel 1975 | Bars on bedding surfaces with spheroial expansions at each end, similar to pair of dumbbells. |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Tommotian to the top of the Richmondian or 525.50000 to 445.50000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tommotian | Russian Federation | A. antiquata (153742) | |
| Arenig | Canada (Newfoundland) | A. antiquata (175923) | |
| Trentonian | USA (Kentucky) | A. rogersensis (173225) | |
| Maysvillian | Canada (Ontario) | A. biclavata (173084) | |
| Richmondian | Canada (Ontario) | A. biclavata (173172) | |
| Richmondian | USA (Ohio) | A. biclavata (5326) |