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Taxonomy
Nuculopsis imperta was named by Waterhouse (1964). Its type specimen is NZGS TM3519 and is not a trace fossil. Its type locality is GS6323, east tributary of Letham Burn (D44/f9672), which is in a Roadian marine horizon in the Letham Formation of New Zealand.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1964 | Nuculopsis imperta Waterhouse p. 633 figs. Pl 96, figs 1-2; text-fig 3 |
| 1980 | Nuculopsis imperta Waterhouse p. 99 fig. 1.1,1.2 |
| 1987 | Nuculopsis imperta Waterhouse p. 134 figs. Pl 1, fig 1 |
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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.
†Nuculopsis imperta Waterhouse 1964
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 6.82 | 6.20 | 7.50 | 6.85 | 0.919 | |
| valve height | 2 | 6.45 | 5.20 | 8.00 | 6.60 | 1.98 |
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| Source: f = family, c = class | |||||
| References: Mikkelsen and Bieler 2008, Aberhan et al. 2004 | |||||
Age range: base of the Kungurian to the top of the Wuchiapingian or 279.30000 to 254.17000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | New Zealand (Southland) | Nuculopsis imperta (41776) | |
| Roadian | New Zealand (Southland) | Nuculopsis imperta (type locality: 41781) | |
| Wuchiapingian | Australia (Queensland) | Nuculopsis imperta (120340 120539 120661) |