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Tropidelasma rhamphodes
Taxonomy
Tropidelasma rhamphodes was named by Cooper and Grant (1974). Its type specimen is USNM 147882b, a shell (Articulated shell), and it is not a trace fossil.
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Tropidelasma rhamphodes Cooper and Grant pp. 344-346 figs. Pl 54, figs 1-39; pl 55, figs 1-14 |
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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.
†Tropidelasma rhamphodes Cooper and Grant 1974
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 15 | 18.9 | 3.00 | 48.8 | 21.7 | 14.7 |
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| Source: c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Age range: base of the Artinskian to the top of the Kungurian or 290.10000 to 272.30000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | USA (Texas) | Tropidelasma rhamphodes (43559 43565 43577 43581 43594 75886 75931 105685) | |
| Kungurian | USA (Texas) | Tropidelasma rhamphodes (105689) |