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Eumorphoceras bisulcatum
Taxonomy
Eumorphoceras bisulcatum was named by Girty (1909).
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Eumorphoceras bisulcatum Girty p. 68 |
| 1937 | Eumorphoceras bisulcatum Plummer and Scott p. 175 figs. Pl 38, figs 4-7; text-fig 37 |
| 1964 | Eumorphoceras bisulcatum Gordon p. 235 figs. Pl 25, figs 9,10,16-18,28-30; text-figs 63G,H,K,L, 65C, 66C |
| 1964 | Eumorphoceras bisulcatum Gordon, Jr. p. A17 figs. Plate 2, figures 13, 14 |
| 1971 | Eumorphoceras bisulcatum Ruzhentsev and Bogoslovskaya p. 184 figs. Pl 7, figs 8,9; pl 8, fig 1; text-fig 27b |
| 2000 | Eumorphoceras bisulcatum Titus p. 21 figs. Plate 2, figure 11; plate 3, figures 11-19 |
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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.
†Eumorphoceras bisulcatum Girty 1909
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. L. Titus 2000 | Species is characterized by numerous (30-40) medium-strength, slightly prosiradiate ribs with a sub-angu- lar bend at 10 mm diameter. Lack of constrictions and rel- atively narrow umbilicus (U/D = 0.25 at D = 10-15 mm) and intrasulcate ventral area also diagnostic. Conchs with D > 30 mm cannot be differentiated from similar species. |
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 8.00 | |||||
| shell diameter | 1 | 14.6 | |||||
| shell inflation | 1 | 3.70 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Arnsbergian or 326.90000 to 323.60000 Ma
Collections (20 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chesterian | USA (Arkansas) | Eumorphoceras bisulcatum (79627) | |
| Chesterian | USA (Nevada) | Eumorphoceras bisulcatum (12781) | |
| Chesterian | USA (Oklahoma) | Eumorphoceras bisulcatum (584) | |
| Pendleian - Arnsbergian | United Kingdom (England) | Eumorphoceras bisulcatum (8172 8173 8174) | |
| Serpukhovian | USA (Texas) | Eumorphoceras bisulcatum (128624) | |
| Arnsbergian | USA (California) | Eumorphoceras bisulcatum (220592) | |
| Arnsbergian | USA (Oklahoma) | Eumorphoceras bisulcatum (157974 158039) | |
| Arnsbergian | Russian Federation (Orenburg) | Eumorphoceras bisulcatum (166935) | |
| Arnsbergian | United Kingdom (England) | Eumorphoceras bisulcatum (8254 8255 8461 8463 8464) | |
| Arnsbergian | USA (Arkansas) | Eumorphoceras bisulcatum (157881 157997) | |
| Arnsbergian | United Kingdom (Scotland) | Eumorphoceras bisulcatum (93311 93314) |