Acanthoscaphites
Acanthoscaphites Temporal range: Late Campanian to Late Maastrichtian | |
---|---|
Acanthoscaphites tridens fossil | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | Ammonoidea |
Genus: | Acanthoscaphites Schluter 1872 |
Acanthoscaphites is an extinct genus of cephalopod belonging to the Ammonite subclass. The average diameter of its shell was approximately three fourths of an inch, but some specimens have been found with a diameter of slightly over two inches.
Classification
Acanthoscaphites was first described by Schluter in 1872. Subsequent taxonomic revisions may have rendered Acanthoscaphites synonymous with Scaphites and Trachyscaphites. Little information is available regarding the validity or synonymy of the Acanthoscaphites genus, so this page may be inaccurate. Please use caution when referring to this article.
Species
Note: A. nodosa and A. nodosus may be misspellings of the same name.
- A. gibbus
- A. nodosa
- A. nodosus
- A. praequadrispinosus
- A. spiniger
- A. schmidi
- A. tridens
Subgenus Euroscaphites
- A. (Euroscaphites) varians blaszkiewiczi
- A. (Euroscaphites) varians
- A. (Euroscaphites) varians varians
Biogeography
Acanthoscaphites was a widespread genus during Campanian and Maastrichtian times, approximately 80 million years ago. Its remains can be found in rocks of that age from many countries, such as:
- Armenia
- Germany
- Poland
- Russia
- Sweden
- Turkmenistan
- Ukraine
- United States
- Fannin County, Texas
- Red River County, Texas
- Sumter County, Alabama