Acanthoscaphites

Acanthoscaphites Temporal range:
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