Kossmaticeras

Kossmaticeras is an extinct ammonoid genus belonging to the desmoceratacean family Kossmaticeratidae. Species in this genus were fast-moving nektonic carnivores.[1] They lived during the Late Cretaceous, from upper Turonian to upper Maastrichtian age.[2] The type species of the genus is Ammonites theobaldianus.[1]

Kossmaticeras
Temporal range: Early Cretaceous [1]
Kossmaticeras species from Madagascar
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: †Ammonoidea
Order: †Ammonitida
Family: †Kossmaticeratidae
Genus: †Kossmaticeras
de Grossouvre, 1901
Synonyms
  • Kossmaticeras (Madrasites) Kilian and Reboul, 1909
  • Madrasites Kilian and Reboul, 1909

Subgenera and species

[1]

  • Kossmaticeras (Karapadites) Collignon, 1954
    • Kossmaticeras (Karapadites) besairieri Collignon, 1954
    • Kossmaticeras (Karapadites) karapadensis Kossmat, 1897
    • Kossmaticeras (Karapadites) madrasinus Stoliczka, 1865
    • Kossmaticeras (Karapadites) planissimus Collignon, 1966
  • Kossmaticeras (Kossmaticeras) de Grossouvre, 1901
    • Kossmaticeras (Kossmaticeras) inornatum Collignon, 1966
    • Kossmaticeras (Kossmaticeras) jeletzkyi Collignon, 1965
    • Kossmaticeras (Kossmaticeras) jonesi Collignon, 1965
    • Kossmaticeras (Kossmaticeras) kilenensis Alsen, 2018
    • Kossmaticeras (Kossmaticeras) sakondryense Collignon, 1954
    • Kossmaticeras (Kossmaticeras) sparsicostatum Kossmat, 1897
    • Kossmaticeras (Kossmaticeras) theobaldianum Stolickza, 1865
  • Kossmaticeras (Natalites) Collignon, 1954
    • Kossmaticeras (Natalites) africanus van Hoepen, 1920
    • Kossmaticeras (Natalites) elegans Kennedy, 1985
    • Kossmaticeras (Natalites) similis Spath, 1921
    • Kossmaticeras (Natalites) canadense McLearn, 1972

Distribution

Fossils of species within this genus have been found in the Cretaceous sediments of Antarctica, Australia, Canada, Chile, India, Madagascar, New Zealand and South Africa.

References
  1. The Paleobiology Database
  2. Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopoda

Further reading
  • Arkell et al. 1957. Mesozoic Ammonoidea, L374; Treatise on Invertebrate Paleontology Part L (Ammonoidea); Geol Soc of America and Univ Kansas Press.


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