Acanthoscaphites

Acanthoscaphites is an extinct genus of cephalopod belonging to the Ammonite subclass. The average diameter of its shell was approximately 20 millimetres (3⁄4 inch), but some specimens have been found with a diameter of slightly over 50 mm (2 in).

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).


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