A new curved baculite from the Upper Cretaceous of Wyoming
Journal of Research of the U.S. Geological Survey
By: W. A. Cobban
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Abstract
Baculites reduncus, n. sp., is a moderately large ammonite that has a curved shell, a large angle of taper, and a stout ovate cross section. Conspicuous broad, arcuate ribs cross the upper two-thirds of the flank. The suture, which is fairly complex, has a distinctive lateral lobe. All the types are from the lower part of the Rock River Formation near Rock River, Wyo. The species is of late Campanian age and marks a zone between the Zones of Baculites gregoryensis Cobban and B. scotti Cobban
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A new curved baculite from the Upper Cretaceous of Wyoming |
| Series title | Journal of Research of the U.S. Geological Survey |
| Volume | 5 |
| Issue | 4 |
| Year Published | 1977 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Description | 6 p. |
| First page | 457 |
| Last page | 462 |
| Country | United States |
| State | Wyoming, Colorado |
| Other Geospatial | Rock River |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |