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Cirsotrema (Coroniscala) nassulum
Taxonomy
Scalaria nassuta was named by Conrad (1854).
It was corrected as Scalaria nassula by Conrad (1856); it was recombined as Cirsotrema (Coroniscala) nassulum by Harris and Palmer (1947).
It was corrected as Scalaria nassula by Conrad (1856); it was recombined as Cirsotrema (Coroniscala) nassulum by Harris and Palmer (1947).
Subspecies
Sister species lacking formal opinion data
C. acutum, C. bourdoty, C. claibornense, C. cochlea, C. cortezi, C. cossmanni, C. creolum, C. crispata, C. crispatum, C. ertborni, C. fimbriosum, C. firmatum, C. jinnahi, C. koeneni, C. kuriensis, C. lyratum, C. nielseni, C. ranellinum, C. rugulosa, C. seguenzai, C. subspinosum, C. undulatum, C. zelebori, C. brevicula, C. lyratum, C. pumiceum, C. sallomacense, C. sallomacense, C. zitteli, C. tamanense, C. bourdoty, C. briarti, C. claibornense, C. lineatum, C. nasssulum, C. newtonense, C. newtonensis, C. nsssulum, C. ranellinum, C. spillmani, C. spillmani, C. ertborni, C. scaberrimum, C. bouillei, C. turbonillaeforme, C. laubrierei, C. youngi, Epitonium suboptima, Scala bourgeois, Scala peyroti, Scala subspinosa
Synonymy list
| Year | Name and author |
|---|---|
| 1854 | Scalaria nassuta Conrad p. 289 |
| 1856 | Scalaria nassula Conrad p. 261 |
| 1947 | Cirsotrema (Coroniscala) nassulum Harris and Palmer p. 242 |
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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.
†Cirsotrema (Coroniscala) nassulum Conrad 1854
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†Cirsotrema (Coroniscala) nassulum crocolum Harris and Palmer 1947
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Beu et al. 1990, Kiessling 2004 | |||||
Age range: base of the Bartonian to the top of the Late/Upper Eocene or 41.03000 to 33.90000 Ma
Collections (19 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bartonian | USA (Alabama) | Cirsotrema nassulum (81282 90600 205438 205489) | |
| Bartonian | USA (Louisiana) | Cirsotrema nassulum (92374) | |
| Bartonian | USA (Mississippi) | Cirsotrema nassulum (99632 99638 99675 99734 164232 178662 205508 232677) | |
| Bartonian | USA (Texas) | Cirsotrema nassulum (7438 205410 205531) | |
| Late/Upper Eocene | USA (Mississippi) | Scalaria nassula (208935) | |
| Priabonian | USA (Louisiana) | Cirsotrema nassulum (92300) | |
| Priabonian | USA (Mississippi) | Cirsotrema nassulum (99677) |