Platyscaphites, a new ammonite from the Lower Campanian (Upper Cretaceous) of the United States Western Interior
A diminutive genus of scaphite, Platyscaphites gen. nov., probably arose from the Scaphites hippocrepis (DeKay, 1828) stock during early Campanian time in the northern part of the United States Western Interior. Three species, all new, are described; they reveal a trend towards progressive size redu...
| Hlavní autoři: | , , |
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| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
1999
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