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Eutrephoceras dekayi
Taxonomy
Nautilus dekayi was named by Morton (1834) [DISTRIBUTION: Campanian-Maastrichtian; Atlantic Coastal Plain and Western Interior Seaway.]. Its type specimen is ANSP 19484, a shell, and it is not a trace fossil.
It was recombined as Eutrephoceras dekayi by Miller (1947), Wiedmann (1960), Shimansky (1975), Mapes and Evans (1995) and Landman et al. (2007).
It was recombined as Eutrephoceras dekayi by Miller (1947), Wiedmann (1960), Shimansky (1975), Mapes and Evans (1995) and Landman et al. (2007).
Synonymy list
| Year | Name and author |
|---|---|
| 1834 | Nautilus dekayi Morton p. 291 figs. pl. 8, fig. 4 |
| 1947 | Eutrephoceras dekayi Miller p. 26 |
| 1960 | Eutrephoceras dekayi Wiedmann p. 155 figs. Pl 17, figs A-C; pl 23, fig B |
| 1975 | Eutrephoceras dekayi Shimansky p. 55 |
| 1995 | Eutrephoceras dekayi Mapes and Evans p. 785 fig. 1 |
| 2007 | Eutrephoceras dekayi Landman et al. p. 55 |
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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.
†Eutrephoceras dekayi Morton 1834
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 41.1 | |||||
| shell diameter | 1 | 71.0 | |||||
| shell inflation | 1 | 4.00 |
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| Source: f = family, o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003, Hendy et al. 2009 | |||||
Age range: base of the Maastrichtian to the top of the Early/Lower Paleocene or 72.10000 to 61.70000 Ma
Collections (78 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian | USA (Tennessee) | Eutrephoceras dekayi (88357) | |
| Late/Upper Campanian | USA (Delaware) | Eutrephoceras dekayi (6170 6174 6176) | |
| Late/Upper Campanian | USA (Colorado) | Eutrephoceras dekayi (162249) | |
| Late/Upper Campanian | Canada (Alberta) | Eutrephoceras dekayi (82638) | |
| Middle Campanian | USA (Texas) | Eutrephoceras dekayi (7467) | |
| Maastrichtian | USA (Texas) | Eutrephoceras dekayi (4532 4559 4623 4629) | |
| Maastrichtian | USA (New Jersey) | Eutrephoceras dekayi (4379 4380 26818) | |
| Early/Lower Maastrichtian | USA (Mississippi) | Eutrephoceras dekayi (4109 4110 4111) | |
| Early/Lower Maastrichtian | USA (Georgia) | Eutrephoceras dekayi (4277) | |
| Early/Lower Maastrichtian | USA (Maryland) | Eutrephoceras dekayi (125950) | |
| Early/Lower Maastrichtian | USA (Alabama) | Eutrephoceras dekayi (4246 4247 4248 4251 4254 4256 4260) | |
| Late/Upper Maastrichtian | USA (Texas) | Eutrephoceras dekayi (4413 4414 4455 4536) | |
| Late/Upper Maastrichtian | USA (South Dakota) | Eutrephoceras dekayi (88510 171173) | |
| Late/Upper Maastrichtian | USA (Maryland) | Eutrephoceras dekayi (4364 4366 4368 4369 4371 4372 4375) | |
| Late/Upper Maastrichtian | USA (Alabama) | Eutrephoceras dekayi (4174 4175 4178 4179 4182 4183 4184 4186 4187 4192 4193 4194 4197 4199 4200 4201 4202 4203 4204 4205 4206 4207 4213 4214 4215 4223 4225 4230 4231 4232 4236 83225) | |
| Late/Upper Maastrichtian | USA (North Carolina) | Eutrephoceras dekayi (4363) | |
| Late/Upper Maastrichtian | USA (Mississippi) | Eutrephoceras dekayi (4168 4170 4171 4172) | |
| Late/Upper Maastrichtian - Early/Lower Paleocene | USA (New Jersey) | Eutrephoceras dekayi (26819) | |
| Danian | Egypt | Nautilus dekayi (86950) |