Newport: Rupelian, Oregon
Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
| Country: | United States | State/province: | Oregon | County: | Lincoln |
| Coordinates: | 44.7° North, 124.1° West (view map) | ||||
| Paleocoordinates: | 49.7° North, 107.3° West (Wright 2013) | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Rupelian | ||
| Age range of interval: | 33.9 - 27.3 m.y. ago |
Stratigraphy
| Formation: | Alsea | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: originally said to be from the Toledo Formation, an obsolete name for the Alsea; Date after Prothero et al., 2001.
The referred specimen, USNM 256593, was originally reported to have come from the Toledo Formation [22, 23]. The Oligocene part of this formation has been re-designated as Alsea Formation [26], and dated to the early-mid Rupelian, spanning latest Chron C13r to the middle of Chron C12n (ca. 33.7–30.6 Ma [25, 27]). USNM 256593 was derived from the uppermost portion of the Alsea Formation [D. Bohaska 2013, pers. comm.], close to its contact with the overlying Yaquina Formation, which implies an age closer to Chron C12n (31.0–30.6 Ma). Marx & Fordyce 2015 | |||||
Lithology and environment
| Primary lithology: | siltstone |
| Includes fossils? | Y |
| Environment: | estuary/bay |
| Geology comments: active-margin estuary | |
Taphonomy
| Modes of preservation: | body,original phosphate |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | USNM |
Metadata
| Database number: | 84332 | ||
| Authorizer: | M. Uhen | Enterer: | M. Uhen |
| Modifier: | M. Uhen | Research group: | vertebrate |
| Created: | 2008-10-09 13:01:32 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2008-10-09 13:01:32 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 28334. | T. A. Deméré and A. Berta. 2008. Skull anatomy of the Oligocene toothed mysticete Aetiocetus weltoni (Mammalia; Cetacea): implications for mysticete evolution and functional anatomy. Zoological Journal of the Linnean Society 154:308-352 [M. Uhen/M. Uhen/M. Uhen] |
Secondary references:
| 55050 | F. G. Marx and R. E. Fordyce. 2015. Baleen boom and bust: a synthesis of mysticete phylogeny, diversity and disparity. Royal Society Open Science 2:140434 [M. Uhen/M. Uhen] |