Acanthoscaphites

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.

Acanthoscaphites
Temporal range: Late Campanian to Late Maastrichtian
A. tridens fossil
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: †Ammonoidea
Order: †Ammonitida
Suborder: †Ancyloceratina
Family: †Scaphitidae
Subfamily: †Scaphitinae
Genus: †Acanthoscaphites
Schluter, 1872
Species
  • see text

Classification

Acanthoscaphites was first described by Schluter in 1872. Subsequent taxonomic revisions indicate that the relationship between Acanthoscaphites and Trachyscaphites is still unclear: Acanthoscaphites may have evolved in parallel with or as a derivative of Trachyscaphites.[1]

Species

  • A. plenus
  • A. tridens
  • A. verneuilianus

Biogeography

Acanthoscaphites was a widespread genus during Campanian and Maastrichtian times, approximately 80 million years ago.[1] Its remains can be found in rocks of that age from Europe and North America.[2]

References
  1. Monks, Neale (2000-05-01). "Functional morphology, ecology, and evolution of the Scaphitaceae Gill, 1871 (cephalopoda)". Journal of Molluscan Studies (Volume 66, Issue 2). doi:10.1093/mollus/66.2.205.
  2. Dubicka, Z.; Peryt, D. (2011-01-01). "Integrated biostratigraphy of Upper Maastrichtian chalk at Chełm (SE Poland)". Annales Societatis Geologorum Poloniae (Volume Vol. 81, No 2).


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.