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Erratencrinurus vigilans
Taxonomy
Ceraurus vigilans was named by Hall (1847).
It was recombined as Encrinurus vigilans by Okulitch (1935); it was recombined as Encrinuroides vigilans by Titus (1982); it was recombined as Erratencrinurus (Erratencrinurus) vigilans by Lespérance and Desbiens (1995); it was recombined as Erratencrinurus vigilans by Moss and Westrop (2014).
It was recombined as Encrinurus vigilans by Okulitch (1935); it was recombined as Encrinuroides vigilans by Titus (1982); it was recombined as Erratencrinurus (Erratencrinurus) vigilans by Lespérance and Desbiens (1995); it was recombined as Erratencrinurus vigilans by Moss and Westrop (2014).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1847 | Ceraurus vigilans Hall pp. 245 - 246 figs. PI., 65. Figs. 2a-h |
| 1880 | Encrinurus trentonensis Walcott p. 68 |
| 1930 | Encrinurus trentonensis Bradley pp. 272 - 273 figs. pl. 29 f. 34-35 |
| 1935 | Encrinurus vigilans Okulitch p. 101 |
| 1982 | Encrinuroides vigilans Titus |
| 1995 | Erratencrinurus (Erratencrinurus) vigilans Lespérance and Desbiens |
| 2014 | Erratencrinurus vigilans Moss and Westrop pp. 1113, table 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.
†Erratencrinurus vigilans Hall 1847
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Invalid names: Erratencrinurus trentonensis Walcott 1880 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. H. Bradley 1930 (Encrinurus trentonensis) | The general outline is triangular, the length equaling the width. The axial lobe is narrow, rounded, and tapers posteriorly; one specimen shows twenty axial rings, with median nodes on the third, sixth, tenth, fourteenth, and eighteenth segment. The pleurae curve sharply to the lateral margins and are marked by nine ribs oli each side. An average specimen is 4 mm. long. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Hendy 2009 | |||||
Collections (21 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Turinian | Canada (Quebec) | Encrinurus vigilans (174157) | |
| Mohawkian | USA (New York) | Encrinuroides vigilans (104598) | |
| Rocklandian | USA (Iowa/Wisconsin) | Encrinuroides vigilans (23116) | |
| Shermanian | USA (Illinois) | Encrinurus trentonensis (154952) | |
| Shermanian | USA (Minnesota) | Encrinuroides vigilans (23278 23279) | |
| Shermanian | USA (Illinois, Iowa) | Encrinuroides vigilans (23799 23800 23801 23802 23803 23804 23805 23806) | |
| Chatfieldian | Canada (Ontario) | Encrinurus trentonensis (26263 26267 26270) | |
| Edenian | USA (Minnesota) | Encrinuroides vigilans (23280) | |
| Edenian | USA (Illinois, Iowa) | Encrinuroides vigilans (23807) | |
| Edenian - Maysvillian | USA (Illinois, Iowa) | Encrinuroides vigilans (23810) | |
| Edenian - Maysvillian | USA (Minnesota) | Encrinuroides vigilans (23282) |