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Dielasma prolongatum
Taxonomy
Dielasma prolongatum was named by Girty (1909).
Sister species lacking formal opinion data
D. acutangulum, D. angulata, D. arkansana, D. arkansanum, D. burlingtonensis, D. corcula, D. corculum, D. coriformes, D. crawfordsvillensis, D. crowfordsvillensis, D. elongatum, D. elongatum, D. formosa, D. formosum, D. globosa, D. hastaeforme, D. hastata, D. hochstetteri, D. hochstetteri, D. hochstetteri, D. illinoisense, D. illinoisensis, D. inflata, D. julicum, D. kingi, D. netschajewi, D. oklahomensis, D. picketti, D. sacculus, D. shumardanum, D. truncatum, D. vesicularis, D. burlingtonensis, D. formosum, D. sinualum, D. sinuatum, D. biplex, D. biplex
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Dielasma prolongatum Girty |
| 1953 | Dielasma prolongatum Cooper p. 75 figs. Pl 22, figs 1-6 |
| 1976 | Dielasma prolongatum Cooper and Grant p. 2884 figs. Pl 752, figs 1-19 |
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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.
†Dielasma prolongatum Girty 1909
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 3 | 11.9 | 11.3 | 13.0 | 11.6 | 0.907 |
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Wordian to the top of the Capitanian or 266.90000 to 259.51000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Roadian - Capitanian | USA (Texas) | Dielasma prolongatum (108835) | |
| Wordian | USA (Texas) | Dielasma prolongatum (105899 105900 106111 106299) | |
| Capitanian | USA (New Mexico) | Dielasma prolongatum (81965 102629) | |
| Capitanian | USA (Texas) | Dielasma prolongatum (81958 102624 106161 108823) |