A revision of the ammonite faunas of the type Cenomanian, 5. Acanthoceratinae Calycoceras (Calycoceras), C. (Gentoniceras) and C. (Newboldiceras).
This contribution continues the revision of the ammonite faunas of the type Cenomanian dealing with the Middle and Upper Cenomanian species of Calycoceras (Calycoceras), C. (Gentoniceras), and C. (Newboldiceras). The following are described and illustrated. C. (C.) naviculare (Mantell, 1822), C. (C....
| Main Authors: | , |
|---|---|
| פורמט: | Journal article |
| שפה: | English |
| יצא לאור: |
1994
|