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Trochonema subcrassum
Taxonomy
Trochonema subcrassum was named by Ulrich and Scofield (1897). It is not extant.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1897 | Trochonema subcrassum Ulrich and Scofield |
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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.
†Trochonema subcrassum Ulrich and Scofield 1897
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, o = order | |||||
| References: Bambach et al. 2007, Hendy 2009 | |||||
Age range: Edenian or 451.00000 to 450.20000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Blackriveran | USA (Kentucky) | Trochonema subcrassum (155399) | |
| Shermanian | USA (Illinois, Iowa) | Trochonema subcrassum (23656 23659 23664 23667 23668 23670) | |
| Shermanian | USA (Minnesota) | Trochonema subcrassum (23579 23584) | |
| Edenian | USA (Illinois, Iowa) | Trochonema subcrassum (23678) | |
| Edenian | USA (Minnesota) | Trochonema subcrassum (23588) |