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Trochonema beachi
Taxonomy
Trochonema beachi was named by Whitfield (1878) [?Trochonema beachi Whitfield 1878]. It is not extant.
Synonymy list
| Year | Name and author |
|---|---|
| 1878 | Trochonema beachi Whitfield |
| 1882 | Trochonema beachi Whitfield p. 213 |
| 1897 | Trochonema beachi Ulrich and Scofield p. 1048 figs. pl. 77 f. 9-12 |
| 1928 | Trochonema beachi Troedsson p. 22 |
| 1995 | Trochonema beachi Wagner p. 177 |
| 1999 | Trochonema beachi Wagner |
| 2023 | Trochonema beachi Wagner p. 2126 |
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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 beachi Whitfield 1878
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, o = order | |||||
| References: Hendy 2009, Bambach et al. 2007 | |||||
Age range: Turinian or 457.30000 to 453.80000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Turinian | USA (Illinois) | Trochonema beachi (88007) | |
| Blackriveran | USA (Minnesota) | Trochonema beachi (23555 23556) | |
| Blackriveran | USA (Wisconsin) | Trochonema beachi (154948) | |
| Blackriveran | USA (Illinois, Iowa) | Trochonema beachi (23613 23614 23615) | |
| Blackriveran - Rocklandian | USA (Minnesota) | Trochonema beachi (23557) |