The Late Cretaceous ammonite Trachyscaphites pulcherrimus (Roemer) in New Jersey and Texas
Journal of Research of the U.S. Geological Survey
By: W. A. Cobban
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Abstract
Trachyscaphites pulcherrimus, described originally by Ferdinand Roemer in 1841 from fragments of nodose ammonites from Germany, is characterized by having five rows of tubercles on each flank of the phragmocone and three to five rows on each side of the body chamber. Weak midventral tubercles are present on some specimens. Ribbing is dense and usually irregular. The species has been recorded from upper Campanian rocks in Germany, Austria, France, Poland, and Russia. Recently a few specimens have been found at the top of the Wenonah Formation of New Jersey and in the Taylor Marl of Texas.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The Late Cretaceous ammonite Trachyscaphites pulcherrimus (Roemer) in New Jersey and Texas |
| Series title | Journal of Research of the U.S. Geological Survey |
| Volume | 1 |
| Issue | 6 |
| Year Published | 1973 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Description | 6 p. |
| First page | 695 |
| Last page | 700 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |